Home / 14,125.80-21,188.70-7,127.40

Finding the Fourth Proportional to 14,125.80, 21,188.70 and 7,127.40

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Solution

The fourth proportional to 14,125.80, 21,188.70 and 7,127.40 is: 10,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,125.80 : 21,188.70 = 7,127.40 : x
  2. Step 2: Convert to fraction form
    14,125.80/21,188.70 = 7,127.40/x
  3. Step 3: Cross multiply
    14,125.80x = 21,188.70 × 7,127.40
  4. Step 4: Simplify right side
    14,125.80x = 151,020,340.38
  5. Step 5: Solve for x
    x = 151,020,340.38/14,125.80
  6. Step 6: Final answer
    x = 10,691.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.