Home / 21,711.08-29,959.24-12,148.40

Finding the Fourth Proportional to 21,711.08, 29,959.24 and 12,148.40

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Solution

The fourth proportional to 21,711.08, 29,959.24 and 12,148.40 is: 16,763.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,711.08 : 29,959.24 = 12,148.40 : x
  2. Step 2: Convert to fraction form
    21,711.08/29,959.24 = 12,148.40/x
  3. Step 3: Cross multiply
    21,711.08x = 29,959.24 × 12,148.40
  4. Step 4: Simplify right side
    21,711.08x = 363,956,831.22
  5. Step 5: Solve for x
    x = 363,956,831.22/21,711.08
  6. Step 6: Final answer
    x = 16,763.64

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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.