Home / 20,499.14-28,288.53-11,547.56

Finding the Fourth Proportional to 20,499.14, 28,288.53 and 11,547.56

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Solution

The fourth proportional to 20,499.14, 28,288.53 and 11,547.56 is: 15,935.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,499.14 : 28,288.53 = 11,547.56 : x
  2. Step 2: Convert to fraction form
    20,499.14/28,288.53 = 11,547.56/x
  3. Step 3: Cross multiply
    20,499.14x = 28,288.53 × 11,547.56
  4. Step 4: Simplify right side
    20,499.14x = 326,663,356.04
  5. Step 5: Solve for x
    x = 326,663,356.04/20,499.14
  6. Step 6: Final answer
    x = 15,935.47

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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.