Home / 38,915.48-58,381.42-12,618.18

Finding the Fourth Proportional to 38,915.48, 58,381.42 and 12,618.18

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Solution

The fourth proportional to 38,915.48, 58,381.42 and 12,618.18 is: 18,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,915.48 : 58,381.42 = 12,618.18 : x
  2. Step 2: Convert to fraction form
    38,915.48/58,381.42 = 12,618.18/x
  3. Step 3: Cross multiply
    38,915.48x = 58,381.42 × 12,618.18
  4. Step 4: Simplify right side
    38,915.48x = 736,667,266.22
  5. Step 5: Solve for x
    x = 736,667,266.22/38,915.48
  6. Step 6: Final answer
    x = 18,929.93

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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.