Home / 12,545.40-17,312.40-7,240.08

Finding the Fourth Proportional to 12,545.40, 17,312.40 and 7,240.08

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Solution

The fourth proportional to 12,545.40, 17,312.40 and 7,240.08 is: 9,991.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,545.40 : 17,312.40 = 7,240.08 : x
  2. Step 2: Convert to fraction form
    12,545.40/17,312.40 = 7,240.08/x
  3. Step 3: Cross multiply
    12,545.40x = 17,312.40 × 7,240.08
  4. Step 4: Simplify right side
    12,545.40x = 125,343,160.99
  5. Step 5: Solve for x
    x = 125,343,160.99/12,545.40
  6. Step 6: Final answer
    x = 9,991.16

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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.