Home / 21,483.92-29,647.68-12,530.72

Finding the Fourth Proportional to 21,483.92, 29,647.68 and 12,530.72

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Solution

The fourth proportional to 21,483.92, 29,647.68 and 12,530.72 is: 17,292.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,483.92 : 29,647.68 = 12,530.72 : x
  2. Step 2: Convert to fraction form
    21,483.92/29,647.68 = 12,530.72/x
  3. Step 3: Cross multiply
    21,483.92x = 29,647.68 × 12,530.72
  4. Step 4: Simplify right side
    21,483.92x = 371,506,776.73
  5. Step 5: Solve for x
    x = 371,506,776.73/21,483.92
  6. Step 6: Final answer
    x = 17,292.32

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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.