Home / 21,470.86-29,630.37-12,039.22

Finding the Fourth Proportional to 21,470.86, 29,630.37 and 12,039.22

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Solution

The fourth proportional to 21,470.86, 29,630.37 and 12,039.22 is: 16,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.86 : 29,630.37 = 12,039.22 : x
  2. Step 2: Convert to fraction form
    21,470.86/29,630.37 = 12,039.22/x
  3. Step 3: Cross multiply
    21,470.86x = 29,630.37 × 12,039.22
  4. Step 4: Simplify right side
    21,470.86x = 356,726,543.11
  5. Step 5: Solve for x
    x = 356,726,543.11/21,470.86
  6. Step 6: Final answer
    x = 16,614.45

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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.