Home / 12,711.81-17,543.34-7,335.21

Finding the Fourth Proportional to 12,711.81, 17,543.34 and 7,335.21

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Solution

The fourth proportional to 12,711.81, 17,543.34 and 7,335.21 is: 10,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,711.81 : 17,543.34 = 7,335.21 : x
  2. Step 2: Convert to fraction form
    12,711.81/17,543.34 = 7,335.21/x
  3. Step 3: Cross multiply
    12,711.81x = 17,543.34 × 7,335.21
  4. Step 4: Simplify right side
    12,711.81x = 128,684,083.00
  5. Step 5: Solve for x
    x = 128,684,083.00/12,711.81
  6. Step 6: Final answer
    x = 10,123.19

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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.