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Finding the Fourth Proportional to 28,660.32, 42,990.98 and 9,941.01

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Solution

The fourth proportional to 28,660.32, 42,990.98 and 9,941.01 is: 14,911.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,660.32 : 42,990.98 = 9,941.01 : x
  2. Step 2: Convert to fraction form
    28,660.32/42,990.98 = 9,941.01/x
  3. Step 3: Cross multiply
    28,660.32x = 42,990.98 × 9,941.01
  4. Step 4: Simplify right side
    28,660.32x = 427,373,712.38
  5. Step 5: Solve for x
    x = 427,373,712.38/28,660.32
  6. Step 6: Final answer
    x = 14,911.69

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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.