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Finding the Fourth Proportional to 28,610.16, 42,904.71 and 9,885.39

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Solution

The fourth proportional to 28,610.16, 42,904.71 and 9,885.39 is: 14,824.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.16 : 42,904.71 = 9,885.39 : x
  2. Step 2: Convert to fraction form
    28,610.16/42,904.71 = 9,885.39/x
  3. Step 3: Cross multiply
    28,610.16x = 42,904.71 × 9,885.39
  4. Step 4: Simplify right side
    28,610.16x = 424,129,791.19
  5. Step 5: Solve for x
    x = 424,129,791.19/28,610.16
  6. Step 6: Final answer
    x = 14,824.45

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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.