Home / 28,307.76-39,064.32-15,732.24

Finding the Fourth Proportional to 28,307.76, 39,064.32 and 15,732.24

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Solution

The fourth proportional to 28,307.76, 39,064.32 and 15,732.24 is: 21,710.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,307.76 : 39,064.32 = 15,732.24 : x
  2. Step 2: Convert to fraction form
    28,307.76/39,064.32 = 15,732.24/x
  3. Step 3: Cross multiply
    28,307.76x = 39,064.32 × 15,732.24
  4. Step 4: Simplify right side
    28,307.76x = 614,569,257.68
  5. Step 5: Solve for x
    x = 614,569,257.68/28,307.76
  6. Step 6: Final answer
    x = 21,710.28

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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.