Home / 28,686.75-43,031.75-10,218.75

Finding the Fourth Proportional to 28,686.75, 43,031.75 and 10,218.75

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Solution

The fourth proportional to 28,686.75, 43,031.75 and 10,218.75 is: 15,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,686.75 : 43,031.75 = 10,218.75 : x
  2. Step 2: Convert to fraction form
    28,686.75/43,031.75 = 10,218.75/x
  3. Step 3: Cross multiply
    28,686.75x = 43,031.75 × 10,218.75
  4. Step 4: Simplify right side
    28,686.75x = 439,730,644.22
  5. Step 5: Solve for x
    x = 439,730,644.22/28,686.75
  6. Step 6: Final answer
    x = 15,328.70

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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.