Home / 12,545.28-17,312.81-7,765.98

Finding the Fourth Proportional to 12,545.28, 17,312.81 and 7,765.98

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Solution

The fourth proportional to 12,545.28, 17,312.81 and 7,765.98 is: 10,717.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.28 : 17,312.81 = 7,765.98 : x
  2. Step 2: Convert to fraction form
    12,545.28/17,312.81 = 7,765.98/x
  3. Step 3: Cross multiply
    12,545.28x = 17,312.81 × 7,765.98
  4. Step 4: Simplify right side
    12,545.28x = 134,450,832.45
  5. Step 5: Solve for x
    x = 134,450,832.45/12,545.28
  6. Step 6: Final answer
    x = 10,717.24

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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.