Home / 21,702.08-29,948.61-12,750.40

Finding the Fourth Proportional to 21,702.08, 29,948.61 and 12,750.40

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Solution

The fourth proportional to 21,702.08, 29,948.61 and 12,750.40 is: 17,595.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,702.08 : 29,948.61 = 12,750.40 : x
  2. Step 2: Convert to fraction form
    21,702.08/29,948.61 = 12,750.40/x
  3. Step 3: Cross multiply
    21,702.08x = 29,948.61 × 12,750.40
  4. Step 4: Simplify right side
    21,702.08x = 381,856,756.94
  5. Step 5: Solve for x
    x = 381,856,756.94/21,702.08
  6. Step 6: Final answer
    x = 17,595.40

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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.