Home / 28,503.28-39,330.12-15,925.60

Finding the Fourth Proportional to 28,503.28, 39,330.12 and 15,925.60

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Solution

The fourth proportional to 28,503.28, 39,330.12 and 15,925.60 is: 21,974.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,503.28 : 39,330.12 = 15,925.60 : x
  2. Step 2: Convert to fraction form
    28,503.28/39,330.12 = 15,925.60/x
  3. Step 3: Cross multiply
    28,503.28x = 39,330.12 × 15,925.60
  4. Step 4: Simplify right side
    28,503.28x = 626,355,759.07
  5. Step 5: Solve for x
    x = 626,355,759.07/28,503.28
  6. Step 6: Final answer
    x = 21,974.87

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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.