Home / 19,869.08-29,779-9,333.20

Finding the Fourth Proportional to 19,869.08, 29,779 and 9,333.20

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Solution

The fourth proportional to 19,869.08, 29,779 and 9,333.20 is: 13,988.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.08 : 29,779 = 9,333.20 : x
  2. Step 2: Convert to fraction form
    19,869.08/29,779 = 9,333.20/x
  3. Step 3: Cross multiply
    19,869.08x = 29,779 × 9,333.20
  4. Step 4: Simplify right side
    19,869.08x = 277,933,362.80
  5. Step 5: Solve for x
    x = 277,933,362.80/19,869.08
  6. Step 6: Final answer
    x = 13,988.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.