Home / 15,748.86-21,713.25-12,905.76

Finding the Fourth Proportional to 15,748.86, 21,713.25 and 12,905.76

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Solution

The fourth proportional to 15,748.86, 21,713.25 and 12,905.76 is: 17,793.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.86 : 21,713.25 = 12,905.76 : x
  2. Step 2: Convert to fraction form
    15,748.86/21,713.25 = 12,905.76/x
  3. Step 3: Cross multiply
    15,748.86x = 21,713.25 × 12,905.76
  4. Step 4: Simplify right side
    15,748.86x = 280,225,993.32
  5. Step 5: Solve for x
    x = 280,225,993.32/15,748.86
  6. Step 6: Final answer
    x = 17,793.41

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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.