Home / 15,432.21-21,295.77-8,717.82

Finding the Fourth Proportional to 15,432.21, 21,295.77 and 8,717.82

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Solution

The fourth proportional to 15,432.21, 21,295.77 and 8,717.82 is: 12,030.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,432.21 : 21,295.77 = 8,717.82 : x
  2. Step 2: Convert to fraction form
    15,432.21/21,295.77 = 8,717.82/x
  3. Step 3: Cross multiply
    15,432.21x = 21,295.77 × 8,717.82
  4. Step 4: Simplify right side
    15,432.21x = 185,652,583.14
  5. Step 5: Solve for x
    x = 185,652,583.14/15,432.21
  6. Step 6: Final answer
    x = 12,030.20

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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.