Home / 15,329.64-21,155.27-8,614.86

Finding the Fourth Proportional to 15,329.64, 21,155.27 and 8,614.86

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Solution

The fourth proportional to 15,329.64, 21,155.27 and 8,614.86 is: 11,888.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,329.64 : 21,155.27 = 8,614.86 : x
  2. Step 2: Convert to fraction form
    15,329.64/21,155.27 = 8,614.86/x
  3. Step 3: Cross multiply
    15,329.64x = 21,155.27 × 8,614.86
  4. Step 4: Simplify right side
    15,329.64x = 182,249,689.31
  5. Step 5: Solve for x
    x = 182,249,689.31/15,329.64
  6. Step 6: Final answer
    x = 11,888.71

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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.