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Finding the Fourth Proportional to 12,488.92, 17,235.04 and 6,823.90

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Solution

The fourth proportional to 12,488.92, 17,235.04 and 6,823.90 is: 9,417.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,488.92 : 17,235.04 = 6,823.90 : x
  2. Step 2: Convert to fraction form
    12,488.92/17,235.04 = 6,823.90/x
  3. Step 3: Cross multiply
    12,488.92x = 17,235.04 × 6,823.90
  4. Step 4: Simplify right side
    12,488.92x = 117,610,189.46
  5. Step 5: Solve for x
    x = 117,610,189.46/12,488.92
  6. Step 6: Final answer
    x = 9,417.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.