Home / 42,770.46-64,166.76-13,187.64

Finding the Fourth Proportional to 42,770.46, 64,166.76 and 13,187.64

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Solution

The fourth proportional to 42,770.46, 64,166.76 and 13,187.64 is: 19,784.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,770.46 : 64,166.76 = 13,187.64 : x
  2. Step 2: Convert to fraction form
    42,770.46/64,166.76 = 13,187.64/x
  3. Step 3: Cross multiply
    42,770.46x = 64,166.76 × 13,187.64
  4. Step 4: Simplify right side
    42,770.46x = 846,208,130.85
  5. Step 5: Solve for x
    x = 846,208,130.85/42,770.46
  6. Step 6: Final answer
    x = 19,784.87

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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.