Home / 28,299.06-42,455.18-8,307.76

Finding the Fourth Proportional to 28,299.06, 42,455.18 and 8,307.76

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Solution

The fourth proportional to 28,299.06, 42,455.18 and 8,307.76 is: 12,463.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,299.06 : 42,455.18 = 8,307.76 : x
  2. Step 2: Convert to fraction form
    28,299.06/42,455.18 = 8,307.76/x
  3. Step 3: Cross multiply
    28,299.06x = 42,455.18 × 8,307.76
  4. Step 4: Simplify right side
    28,299.06x = 352,707,446.20
  5. Step 5: Solve for x
    x = 352,707,446.20/28,299.06
  6. Step 6: Final answer
    x = 12,463.57

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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.