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Finding the Fourth Proportional to 28,610.15, 42,916.25 and 8,888.19

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Solution

The fourth proportional to 28,610.15, 42,916.25 and 8,888.19 is: 13,332.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,610.15 : 42,916.25 = 8,888.19 : x
  2. Step 2: Convert to fraction form
    28,610.15/42,916.25 = 8,888.19/x
  3. Step 3: Cross multiply
    28,610.15x = 42,916.25 × 8,888.19
  4. Step 4: Simplify right side
    28,610.15x = 381,447,739.65
  5. Step 5: Solve for x
    x = 381,447,739.65/28,610.15
  6. Step 6: Final answer
    x = 13,332.60

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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.