Home / 28,670.10-42,997.95-10,197.78

Finding the Fourth Proportional to 28,670.10, 42,997.95 and 10,197.78

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Solution

The fourth proportional to 28,670.10, 42,997.95 and 10,197.78 is: 15,294.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,670.10 : 42,997.95 = 10,197.78 : x
  2. Step 2: Convert to fraction form
    28,670.10/42,997.95 = 10,197.78/x
  3. Step 3: Cross multiply
    28,670.10x = 42,997.95 × 10,197.78
  4. Step 4: Simplify right side
    28,670.10x = 438,483,634.55
  5. Step 5: Solve for x
    x = 438,483,634.55/28,670.10
  6. Step 6: Final answer
    x = 15,294.11

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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.