Home / 28,100.30-38,777.95-15,353.20

Finding the Fourth Proportional to 28,100.30, 38,777.95 and 15,353.20

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Solution

The fourth proportional to 28,100.30, 38,777.95 and 15,353.20 is: 21,187.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,100.30 : 38,777.95 = 15,353.20 : x
  2. Step 2: Convert to fraction form
    28,100.30/38,777.95 = 15,353.20/x
  3. Step 3: Cross multiply
    28,100.30x = 38,777.95 × 15,353.20
  4. Step 4: Simplify right side
    28,100.30x = 595,365,486.61
  5. Step 5: Solve for x
    x = 595,365,486.61/28,100.30
  6. Step 6: Final answer
    x = 21,187.16

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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.