Home / 21,790,215.81-30,070,130.99-12,001,571.55

Finding the Fourth Proportional to 21,790,215.81, 30,070,130.99 and 12,001,571.55

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Solution

The fourth proportional to 21,790,215.81, 30,070,130.99 and 12,001,571.55 is: 16,561,966.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790,215.81 : 30,070,130.99 = 12,001,571.55 : x
  2. Step 2: Convert to fraction form
    21,790,215.81/30,070,130.99 = 12,001,571.55/x
  3. Step 3: Cross multiply
    21,790,215.81x = 30,070,130.99 × 12,001,571.55
  4. Step 4: Simplify right side
    21,790,215.81x = 360,888,828,534,349.50
  5. Step 5: Solve for x
    x = 360,888,828,534,349.50/21,790,215.81
  6. Step 6: Final answer
    x = 16,561,966.70

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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.