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Finding the Fourth Proportional to 10,472.32, 15,699.84 and 4,312

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Solution

The fourth proportional to 10,472.32, 15,699.84 and 4,312 is: 6,464.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,472.32 : 15,699.84 = 4,312 : x
  2. Step 2: Convert to fraction form
    10,472.32/15,699.84 = 4,312/x
  3. Step 3: Cross multiply
    10,472.32x = 15,699.84 × 4,312
  4. Step 4: Simplify right side
    10,472.32x = 67,697,710.08
  5. Step 5: Solve for x
    x = 67,697,710.08/10,472.32
  6. Step 6: Final answer
    x = 6,464.44

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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.