Home / 15,460.40-21,335.19-8,386.85

Finding the Fourth Proportional to 15,460.40, 21,335.19 and 8,386.85

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Solution

The fourth proportional to 15,460.40, 21,335.19 and 8,386.85 is: 11,573.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,460.40 : 21,335.19 = 8,386.85 : x
  2. Step 2: Convert to fraction form
    15,460.40/21,335.19 = 8,386.85/x
  3. Step 3: Cross multiply
    15,460.40x = 21,335.19 × 8,386.85
  4. Step 4: Simplify right side
    15,460.40x = 178,934,931.58
  5. Step 5: Solve for x
    x = 178,934,931.58/15,460.40
  6. Step 6: Final answer
    x = 11,573.76

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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.