Home / 15,126.40-20,876.16-14,642.56

Finding the Fourth Proportional to 15,126.40, 20,876.16 and 14,642.56

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Solution

The fourth proportional to 15,126.40, 20,876.16 and 14,642.56 is: 20,208.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,126.40 : 20,876.16 = 14,642.56 : x
  2. Step 2: Convert to fraction form
    15,126.40/20,876.16 = 14,642.56/x
  3. Step 3: Cross multiply
    15,126.40x = 20,876.16 × 14,642.56
  4. Step 4: Simplify right side
    15,126.40x = 305,680,425.37
  5. Step 5: Solve for x
    x = 305,680,425.37/15,126.40
  6. Step 6: Final answer
    x = 20,208.41

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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.