Home / 21,031.43-31,550.04-7,702.70

Finding the Fourth Proportional to 21,031.43, 31,550.04 and 7,702.70

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Solution

The fourth proportional to 21,031.43, 31,550.04 and 7,702.70 is: 11,555.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.43 : 31,550.04 = 7,702.70 : x
  2. Step 2: Convert to fraction form
    21,031.43/31,550.04 = 7,702.70/x
  3. Step 3: Cross multiply
    21,031.43x = 31,550.04 × 7,702.70
  4. Step 4: Simplify right side
    21,031.43x = 243,020,335.36
  5. Step 5: Solve for x
    x = 243,020,335.36/21,031.43
  6. Step 6: Final answer
    x = 11,555.11

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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.