Home / 42,770.96-64,155.74-12,785.27

Finding the Fourth Proportional to 42,770.96, 64,155.74 and 12,785.27

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Solution

The fourth proportional to 42,770.96, 64,155.74 and 12,785.27 is: 19,177.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,770.96 : 64,155.74 = 12,785.27 : x
  2. Step 2: Convert to fraction form
    42,770.96/64,155.74 = 12,785.27/x
  3. Step 3: Cross multiply
    42,770.96x = 64,155.74 × 12,785.27
  4. Step 4: Simplify right side
    42,770.96x = 820,248,073.24
  5. Step 5: Solve for x
    x = 820,248,073.24/42,770.96
  6. Step 6: Final answer
    x = 19,177.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.