Home / 15,746.47-21,729.33-8,672.74

Finding the Fourth Proportional to 15,746.47, 21,729.33 and 8,672.74

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Solution

The fourth proportional to 15,746.47, 21,729.33 and 8,672.74 is: 11,967.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,746.47 : 21,729.33 = 8,672.74 : x
  2. Step 2: Convert to fraction form
    15,746.47/21,729.33 = 8,672.74/x
  3. Step 3: Cross multiply
    15,746.47x = 21,729.33 × 8,672.74
  4. Step 4: Simplify right side
    15,746.47x = 188,452,775.14
  5. Step 5: Solve for x
    x = 188,452,775.14/15,746.47
  6. Step 6: Final answer
    x = 11,967.94

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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.