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Finding the Fourth Proportional to 17,779.68, 24,535.80 and 9,821.90

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Solution

The fourth proportional to 17,779.68, 24,535.80 and 9,821.90 is: 13,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,779.68 : 24,535.80 = 9,821.90 : x
  2. Step 2: Convert to fraction form
    17,779.68/24,535.80 = 9,821.90/x
  3. Step 3: Cross multiply
    17,779.68x = 24,535.80 × 9,821.90
  4. Step 4: Simplify right side
    17,779.68x = 240,988,051.34
  5. Step 5: Solve for x
    x = 240,988,051.34/17,779.68
  6. Step 6: Final answer
    x = 13,554.13

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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.