Home / 13,140.17-19,699.79-7,587.22

Finding the Fourth Proportional to 13,140.17, 19,699.79 and 7,587.22

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Solution

The fourth proportional to 13,140.17, 19,699.79 and 7,587.22 is: 11,374.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,140.17 : 19,699.79 = 7,587.22 : x
  2. Step 2: Convert to fraction form
    13,140.17/19,699.79 = 7,587.22/x
  3. Step 3: Cross multiply
    13,140.17x = 19,699.79 × 7,587.22
  4. Step 4: Simplify right side
    13,140.17x = 149,466,542.18
  5. Step 5: Solve for x
    x = 149,466,542.18/13,140.17
  6. Step 6: Final answer
    x = 11,374.78

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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.