Home / 20,460.29-28,236.02-11,507.76

Finding the Fourth Proportional to 20,460.29, 28,236.02 and 11,507.76

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Solution

The fourth proportional to 20,460.29, 28,236.02 and 11,507.76 is: 15,881.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,460.29 : 28,236.02 = 11,507.76 : x
  2. Step 2: Convert to fraction form
    20,460.29/28,236.02 = 11,507.76/x
  3. Step 3: Cross multiply
    20,460.29x = 28,236.02 × 11,507.76
  4. Step 4: Simplify right side
    20,460.29x = 324,933,283.98
  5. Step 5: Solve for x
    x = 324,933,283.98/20,460.29
  6. Step 6: Final answer
    x = 15,881.17

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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.