Home / 18,369.12-25,349.28-9,985.44

Finding the Fourth Proportional to 18,369.12, 25,349.28 and 9,985.44

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Solution

The fourth proportional to 18,369.12, 25,349.28 and 9,985.44 is: 13,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,369.12 : 25,349.28 = 9,985.44 : x
  2. Step 2: Convert to fraction form
    18,369.12/25,349.28 = 9,985.44/x
  3. Step 3: Cross multiply
    18,369.12x = 25,349.28 × 9,985.44
  4. Step 4: Simplify right side
    18,369.12x = 253,123,714.48
  5. Step 5: Solve for x
    x = 253,123,714.48/18,369.12
  6. Step 6: Final answer
    x = 13,779.85

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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.