Home / 18,612.16-25,691.52-13,030.72

Finding the Fourth Proportional to 18,612.16, 25,691.52 and 13,030.72

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Solution

The fourth proportional to 18,612.16, 25,691.52 and 13,030.72 is: 17,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,612.16 : 25,691.52 = 13,030.72 : x
  2. Step 2: Convert to fraction form
    18,612.16/25,691.52 = 13,030.72/x
  3. Step 3: Cross multiply
    18,612.16x = 25,691.52 × 13,030.72
  4. Step 4: Simplify right side
    18,612.16x = 334,779,003.49
  5. Step 5: Solve for x
    x = 334,779,003.49/18,612.16
  6. Step 6: Final answer
    x = 17,987.11

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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.