Home / 23,011.04-31,755.36-12,939.92

Finding the Fourth Proportional to 23,011.04, 31,755.36 and 12,939.92

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Solution

The fourth proportional to 23,011.04, 31,755.36 and 12,939.92 is: 17,857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,011.04 : 31,755.36 = 12,939.92 : x
  2. Step 2: Convert to fraction form
    23,011.04/31,755.36 = 12,939.92/x
  3. Step 3: Cross multiply
    23,011.04x = 31,755.36 × 12,939.92
  4. Step 4: Simplify right side
    23,011.04x = 410,911,817.97
  5. Step 5: Solve for x
    x = 410,911,817.97/23,011.04
  6. Step 6: Final answer
    x = 17,857.16

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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.