Home / 13,154.90-18,152.87-7,186.55

Finding the Fourth Proportional to 13,154.90, 18,152.87 and 7,186.55

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Solution

The fourth proportional to 13,154.90, 18,152.87 and 7,186.55 is: 9,916.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,154.90 : 18,152.87 = 7,186.55 : x
  2. Step 2: Convert to fraction form
    13,154.90/18,152.87 = 7,186.55/x
  3. Step 3: Cross multiply
    13,154.90x = 18,152.87 × 7,186.55
  4. Step 4: Simplify right side
    13,154.90x = 130,456,381.20
  5. Step 5: Solve for x
    x = 130,456,381.20/13,154.90
  6. Step 6: Final answer
    x = 9,916.95

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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.