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Finding the Fourth Proportional to 18,050.47, 24,909.80 and 9,985.30

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Solution

The fourth proportional to 18,050.47, 24,909.80 and 9,985.30 is: 13,779.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,050.47 : 24,909.80 = 9,985.30 : x
  2. Step 2: Convert to fraction form
    18,050.47/24,909.80 = 9,985.30/x
  3. Step 3: Cross multiply
    18,050.47x = 24,909.80 × 9,985.30
  4. Step 4: Simplify right side
    18,050.47x = 248,731,713.74
  5. Step 5: Solve for x
    x = 248,731,713.74/18,050.47
  6. Step 6: Final answer
    x = 13,779.79

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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.