Home / 42,868.08-64,278.63-13,277.70

Finding the Fourth Proportional to 42,868.08, 64,278.63 and 13,277.70

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Solution

The fourth proportional to 42,868.08, 64,278.63 and 13,277.70 is: 19,909.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,868.08 : 64,278.63 = 13,277.70 : x
  2. Step 2: Convert to fraction form
    42,868.08/64,278.63 = 13,277.70/x
  3. Step 3: Cross multiply
    42,868.08x = 64,278.63 × 13,277.70
  4. Step 4: Simplify right side
    42,868.08x = 853,472,365.55
  5. Step 5: Solve for x
    x = 853,472,365.55/42,868.08
  6. Step 6: Final answer
    x = 19,909.27

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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.