Home / 38,412.31-57,618.47-12,119.10

Finding the Fourth Proportional to 38,412.31, 57,618.47 and 12,119.10

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Solution

The fourth proportional to 38,412.31, 57,618.47 and 12,119.10 is: 18,178.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,412.31 : 57,618.47 = 12,119.10 : x
  2. Step 2: Convert to fraction form
    38,412.31/57,618.47 = 12,119.10/x
  3. Step 3: Cross multiply
    38,412.31x = 57,618.47 × 12,119.10
  4. Step 4: Simplify right side
    38,412.31x = 698,283,999.78
  5. Step 5: Solve for x
    x = 698,283,999.78/38,412.31
  6. Step 6: Final answer
    x = 18,178.65

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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.