Home / 14,779.28-20,417.62-9,686.88

Finding the Fourth Proportional to 14,779.28, 20,417.62 and 9,686.88

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Solution

The fourth proportional to 14,779.28, 20,417.62 and 9,686.88 is: 13,382.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,779.28 : 20,417.62 = 9,686.88 : x
  2. Step 2: Convert to fraction form
    14,779.28/20,417.62 = 9,686.88/x
  3. Step 3: Cross multiply
    14,779.28x = 20,417.62 × 9,686.88
  4. Step 4: Simplify right side
    14,779.28x = 197,782,934.04
  5. Step 5: Solve for x
    x = 197,782,934.04/14,779.28
  6. Step 6: Final answer
    x = 13,382.45

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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.