Home / 15,122.74-20,867.95-8,748.31

Finding the Fourth Proportional to 15,122.74, 20,867.95 and 8,748.31

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Solution

The fourth proportional to 15,122.74, 20,867.95 and 8,748.31 is: 12,071.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.74 : 20,867.95 = 8,748.31 : x
  2. Step 2: Convert to fraction form
    15,122.74/20,867.95 = 8,748.31/x
  3. Step 3: Cross multiply
    15,122.74x = 20,867.95 × 8,748.31
  4. Step 4: Simplify right side
    15,122.74x = 182,559,295.66
  5. Step 5: Solve for x
    x = 182,559,295.66/15,122.74
  6. Step 6: Final answer
    x = 12,071.84

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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.