Home / 28,509.50-39,343.01-15,934.25

Finding the Fourth Proportional to 28,509.50, 39,343.01 and 15,934.25

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Solution

The fourth proportional to 28,509.50, 39,343.01 and 15,934.25 is: 21,989.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,509.50 : 39,343.01 = 15,934.25 : x
  2. Step 2: Convert to fraction form
    28,509.50/39,343.01 = 15,934.25/x
  3. Step 3: Cross multiply
    28,509.50x = 39,343.01 × 15,934.25
  4. Step 4: Simplify right side
    28,509.50x = 626,901,080.71
  5. Step 5: Solve for x
    x = 626,901,080.71/28,509.50
  6. Step 6: Final answer
    x = 21,989.20

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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.