Home / 12,587.40-17,371.58-7,551.81

Finding the Fourth Proportional to 12,587.40, 17,371.58 and 7,551.81

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Solution

The fourth proportional to 12,587.40, 17,371.58 and 7,551.81 is: 10,422.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,587.40 : 17,371.58 = 7,551.81 : x
  2. Step 2: Convert to fraction form
    12,587.40/17,371.58 = 7,551.81/x
  3. Step 3: Cross multiply
    12,587.40x = 17,371.58 × 7,551.81
  4. Step 4: Simplify right side
    12,587.40x = 131,186,833.80
  5. Step 5: Solve for x
    x = 131,186,833.80/12,587.40
  6. Step 6: Final answer
    x = 10,422.08

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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.