Home / 25,316.91-34,937.12-13,987.20

Finding the Fourth Proportional to 25,316.91, 34,937.12 and 13,987.20

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Solution

The fourth proportional to 25,316.91, 34,937.12 and 13,987.20 is: 19,302.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,316.91 : 34,937.12 = 13,987.20 : x
  2. Step 2: Convert to fraction form
    25,316.91/34,937.12 = 13,987.20/x
  3. Step 3: Cross multiply
    25,316.91x = 34,937.12 × 13,987.20
  4. Step 4: Simplify right side
    25,316.91x = 488,672,484.86
  5. Step 5: Solve for x
    x = 488,672,484.86/25,316.91
  6. Step 6: Final answer
    x = 19,302.22

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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.