Home / 15,281.24-21,089.86-8,568.68

Finding the Fourth Proportional to 15,281.24, 21,089.86 and 8,568.68

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Solution

The fourth proportional to 15,281.24, 21,089.86 and 8,568.68 is: 11,825.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.24 : 21,089.86 = 8,568.68 : x
  2. Step 2: Convert to fraction form
    15,281.24/21,089.86 = 8,568.68/x
  3. Step 3: Cross multiply
    15,281.24x = 21,089.86 × 8,568.68
  4. Step 4: Simplify right side
    15,281.24x = 180,712,261.58
  5. Step 5: Solve for x
    x = 180,712,261.58/15,281.24
  6. Step 6: Final answer
    x = 11,825.76

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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.