Home / 21,158.46-29,131.92-16,106.40

Finding the Fourth Proportional to 21,158.46, 29,131.92 and 16,106.40

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Solution

The fourth proportional to 21,158.46, 29,131.92 and 16,106.40 is: 22,176.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,158.46 : 29,131.92 = 16,106.40 : x
  2. Step 2: Convert to fraction form
    21,158.46/29,131.92 = 16,106.40/x
  3. Step 3: Cross multiply
    21,158.46x = 29,131.92 × 16,106.40
  4. Step 4: Simplify right side
    21,158.46x = 469,210,356.29
  5. Step 5: Solve for x
    x = 469,210,356.29/21,158.46
  6. Step 6: Final answer
    x = 22,176.02

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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.