Home / 21,031.44-31,550.04-7,702.68

Finding the Fourth Proportional to 21,031.44, 31,550.04 and 7,702.68

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Solution

The fourth proportional to 21,031.44, 31,550.04 and 7,702.68 is: 11,555.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,031.44 : 31,550.04 = 7,702.68 : x
  2. Step 2: Convert to fraction form
    21,031.44/31,550.04 = 7,702.68/x
  3. Step 3: Cross multiply
    21,031.44x = 31,550.04 × 7,702.68
  4. Step 4: Simplify right side
    21,031.44x = 243,019,862.11
  5. Step 5: Solve for x
    x = 243,019,862.11/21,031.44
  6. Step 6: Final answer
    x = 11,555.07

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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.