Home / 28,132.12-38,823.16-15,386.04

Finding the Fourth Proportional to 28,132.12, 38,823.16 and 15,386.04

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Solution

The fourth proportional to 28,132.12, 38,823.16 and 15,386.04 is: 21,233.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,132.12 : 38,823.16 = 15,386.04 : x
  2. Step 2: Convert to fraction form
    28,132.12/38,823.16 = 15,386.04/x
  3. Step 3: Cross multiply
    28,132.12x = 38,823.16 × 15,386.04
  4. Step 4: Simplify right side
    28,132.12x = 597,334,692.69
  5. Step 5: Solve for x
    x = 597,334,692.69/28,132.12
  6. Step 6: Final answer
    x = 21,233.19

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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.