Home / 15,275.76-21,064.56-11,305.20

Finding the Fourth Proportional to 15,275.76, 21,064.56 and 11,305.20

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Solution

The fourth proportional to 15,275.76, 21,064.56 and 11,305.20 is: 15,589.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,275.76 : 21,064.56 = 11,305.20 : x
  2. Step 2: Convert to fraction form
    15,275.76/21,064.56 = 11,305.20/x
  3. Step 3: Cross multiply
    15,275.76x = 21,064.56 × 11,305.20
  4. Step 4: Simplify right side
    15,275.76x = 238,139,063.71
  5. Step 5: Solve for x
    x = 238,139,063.71/15,275.76
  6. Step 6: Final answer
    x = 15,589.34

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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.