Home / 20,499.12-28,288.50-11,547.54

Finding the Fourth Proportional to 20,499.12, 28,288.50 and 11,547.54

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Solution

The fourth proportional to 20,499.12, 28,288.50 and 11,547.54 is: 15,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.12 : 28,288.50 = 11,547.54 : x
  2. Step 2: Convert to fraction form
    20,499.12/28,288.50 = 11,547.54/x
  3. Step 3: Cross multiply
    20,499.12x = 28,288.50 × 11,547.54
  4. Step 4: Simplify right side
    20,499.12x = 326,662,585.29
  5. Step 5: Solve for x
    x = 326,662,585.29/20,499.12
  6. Step 6: Final answer
    x = 15,935.44

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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.