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Finding the Fourth Proportional to 12,862.71, 19,312.47 and 7,327.17

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Solution

The fourth proportional to 12,862.71, 19,312.47 and 7,327.17 is: 11,001.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,862.71 : 19,312.47 = 7,327.17 : x
  2. Step 2: Convert to fraction form
    12,862.71/19,312.47 = 7,327.17/x
  3. Step 3: Cross multiply
    12,862.71x = 19,312.47 × 7,327.17
  4. Step 4: Simplify right side
    12,862.71x = 141,505,750.81
  5. Step 5: Solve for x
    x = 141,505,750.81/12,862.71
  6. Step 6: Final answer
    x = 11,001.24

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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.