Home / 15,405.69-21,254.85-8,598.59

Finding the Fourth Proportional to 15,405.69, 21,254.85 and 8,598.59

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Solution

The fourth proportional to 15,405.69, 21,254.85 and 8,598.59 is: 11,863.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.69 : 21,254.85 = 8,598.59 : x
  2. Step 2: Convert to fraction form
    15,405.69/21,254.85 = 8,598.59/x
  3. Step 3: Cross multiply
    15,405.69x = 21,254.85 × 8,598.59
  4. Step 4: Simplify right side
    15,405.69x = 182,761,797.72
  5. Step 5: Solve for x
    x = 182,761,797.72/15,405.69
  6. Step 6: Final answer
    x = 11,863.27

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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.