Home / 15,077.34-20,822.67-13,428.18

Finding the Fourth Proportional to 15,077.34, 20,822.67 and 13,428.18

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Solution

The fourth proportional to 15,077.34, 20,822.67 and 13,428.18 is: 18,545.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.34 : 20,822.67 = 13,428.18 : x
  2. Step 2: Convert to fraction form
    15,077.34/20,822.67 = 13,428.18/x
  3. Step 3: Cross multiply
    15,077.34x = 20,822.67 × 13,428.18
  4. Step 4: Simplify right side
    15,077.34x = 279,610,560.84
  5. Step 5: Solve for x
    x = 279,610,560.84/15,077.34
  6. Step 6: Final answer
    x = 18,545.09

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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.