Home / 12,158.95-18,238.43-9,389.66

Finding the Fourth Proportional to 12,158.95, 18,238.43 and 9,389.66

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Solution

The fourth proportional to 12,158.95, 18,238.43 and 9,389.66 is: 14,084.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.95 : 18,238.43 = 9,389.66 : x
  2. Step 2: Convert to fraction form
    12,158.95/18,238.43 = 9,389.66/x
  3. Step 3: Cross multiply
    12,158.95x = 18,238.43 × 9,389.66
  4. Step 4: Simplify right side
    12,158.95x = 171,252,656.63
  5. Step 5: Solve for x
    x = 171,252,656.63/12,158.95
  6. Step 6: Final answer
    x = 14,084.49

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Double scale
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Similar ratio
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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.