Home / 28,404.90-42,607.35-25,640.10

Finding the Fourth Proportional to 28,404.90, 42,607.35 and 25,640.10

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Solution

The fourth proportional to 28,404.90, 42,607.35 and 25,640.10 is: 38,460.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,404.90 : 42,607.35 = 25,640.10 : x
  2. Step 2: Convert to fraction form
    28,404.90/42,607.35 = 25,640.10/x
  3. Step 3: Cross multiply
    28,404.90x = 42,607.35 × 25,640.10
  4. Step 4: Simplify right side
    28,404.90x = 1,092,456,714.74
  5. Step 5: Solve for x
    x = 1,092,456,714.74/28,404.90
  6. Step 6: Final answer
    x = 38,460.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.