Home / 28,689.99-39,591.75-15,943.08

Finding the Fourth Proportional to 28,689.99, 39,591.75 and 15,943.08

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Solution

The fourth proportional to 28,689.99, 39,591.75 and 15,943.08 is: 22,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,689.99 : 39,591.75 = 15,943.08 : x
  2. Step 2: Convert to fraction form
    28,689.99/39,591.75 = 15,943.08/x
  3. Step 3: Cross multiply
    28,689.99x = 39,591.75 × 15,943.08
  4. Step 4: Simplify right side
    28,689.99x = 631,214,437.59
  5. Step 5: Solve for x
    x = 631,214,437.59/28,689.99
  6. Step 6: Final answer
    x = 22,001.21

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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.