Home / 15,498.84-21,388.86-8,425.72

Finding the Fourth Proportional to 15,498.84, 21,388.86 and 8,425.72

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Solution

The fourth proportional to 15,498.84, 21,388.86 and 8,425.72 is: 11,627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,498.84 : 21,388.86 = 8,425.72 : x
  2. Step 2: Convert to fraction form
    15,498.84/21,388.86 = 8,425.72/x
  3. Step 3: Cross multiply
    15,498.84x = 21,388.86 × 8,425.72
  4. Step 4: Simplify right side
    15,498.84x = 180,216,572.22
  5. Step 5: Solve for x
    x = 180,216,572.22/15,498.84
  6. Step 6: Final answer
    x = 11,627.74

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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.