Home / 15,154.56-20,913.27-8,440.77

Finding the Fourth Proportional to 15,154.56, 20,913.27 and 8,440.77

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Solution

The fourth proportional to 15,154.56, 20,913.27 and 8,440.77 is: 11,648.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,154.56 : 20,913.27 = 8,440.77 : x
  2. Step 2: Convert to fraction form
    15,154.56/20,913.27 = 8,440.77/x
  3. Step 3: Cross multiply
    15,154.56x = 20,913.27 × 8,440.77
  4. Step 4: Simplify right side
    15,154.56x = 176,524,102.02
  5. Step 5: Solve for x
    x = 176,524,102.02/15,154.56
  6. Step 6: Final answer
    x = 11,648.25

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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.