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Finding the Fourth Proportional to 28,411.17, 42,616.74 and 7,634.67

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Solution

The fourth proportional to 28,411.17, 42,616.74 and 7,634.67 is: 11,452.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,411.17 : 42,616.74 = 7,634.67 : x
  2. Step 2: Convert to fraction form
    28,411.17/42,616.74 = 7,634.67/x
  3. Step 3: Cross multiply
    28,411.17x = 42,616.74 × 7,634.67
  4. Step 4: Simplify right side
    28,411.17x = 325,364,746.38
  5. Step 5: Solve for x
    x = 325,364,746.38/28,411.17
  6. Step 6: Final answer
    x = 11,452.00

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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.