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Finding the Fourth Proportional to 28,673.76, 42,993.84 and 8,677.32

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Solution

The fourth proportional to 28,673.76, 42,993.84 and 8,677.32 is: 13,010.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,673.76 : 42,993.84 = 8,677.32 : x
  2. Step 2: Convert to fraction form
    28,673.76/42,993.84 = 8,677.32/x
  3. Step 3: Cross multiply
    28,673.76x = 42,993.84 × 8,677.32
  4. Step 4: Simplify right side
    28,673.76x = 373,071,307.71
  5. Step 5: Solve for x
    x = 373,071,307.71/28,673.76
  6. Step 6: Final answer
    x = 13,010.90

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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.