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Finding the Fourth Proportional to 28,610.10, 42,904.62 and 9,885.32

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Solution

The fourth proportional to 28,610.10, 42,904.62 and 9,885.32 is: 14,824.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.10 : 42,904.62 = 9,885.32 : x
  2. Step 2: Convert to fraction form
    28,610.10/42,904.62 = 9,885.32/x
  3. Step 3: Cross multiply
    28,610.10x = 42,904.62 × 9,885.32
  4. Step 4: Simplify right side
    28,610.10x = 424,125,898.18
  5. Step 5: Solve for x
    x = 424,125,898.18/28,610.10
  6. Step 6: Final answer
    x = 14,824.34

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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.