Home / 15,719.91-21,693.52-8,646.33

Finding the Fourth Proportional to 15,719.91, 21,693.52 and 8,646.33

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Solution

The fourth proportional to 15,719.91, 21,693.52 and 8,646.33 is: 11,931.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,719.91 : 21,693.52 = 8,646.33 : x
  2. Step 2: Convert to fraction form
    15,719.91/21,693.52 = 8,646.33/x
  3. Step 3: Cross multiply
    15,719.91x = 21,693.52 × 8,646.33
  4. Step 4: Simplify right side
    15,719.91x = 187,569,332.78
  5. Step 5: Solve for x
    x = 187,569,332.78/15,719.91
  6. Step 6: Final answer
    x = 11,931.96

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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.