Home / 21,088,834,987.88-29,100,668,725.86-12,513,783,953.90

Finding the Fourth Proportional to 21,088,834,987.88, 29,100,668,725.86 and 12,513,783,953.90

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Solution

The fourth proportional to 21,088,834,987.88, 29,100,668,725.86 and 12,513,783,953.90 is: 17,267,880,447.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088,834,987.88 : 29,100,668,725.86 = 12,513,783,953.90 : x
  2. Step 2: Convert to fraction form
    21,088,834,987.88/29,100,668,725.86 = 12,513,783,953.90/x
  3. Step 3: Cross multiply
    21,088,834,987.88x = 29,100,668,725.86 × 12,513,783,953.90
  4. Step 4: Simplify right side
    21,088,834,987.88x = 364,159,481,349,426,446,336
  5. Step 5: Solve for x
    x = 364,159,481,349,426,446,336/21,088,834,987.88
  6. Step 6: Final answer
    x = 17,267,880,447.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.