Home / 28,371.38-39,152.20-15,624.32

Finding the Fourth Proportional to 28,371.38, 39,152.20 and 15,624.32

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Solution

The fourth proportional to 28,371.38, 39,152.20 and 15,624.32 is: 21,561.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.38 : 39,152.20 = 15,624.32 : x
  2. Step 2: Convert to fraction form
    28,371.38/39,152.20 = 15,624.32/x
  3. Step 3: Cross multiply
    28,371.38x = 39,152.20 × 15,624.32
  4. Step 4: Simplify right side
    28,371.38x = 611,726,501.50
  5. Step 5: Solve for x
    x = 611,726,501.50/28,371.38
  6. Step 6: Final answer
    x = 21,561.39

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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.