Home / 42,904.20-64,352.70-13,321.56

Finding the Fourth Proportional to 42,904.20, 64,352.70 and 13,321.56

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Solution

The fourth proportional to 42,904.20, 64,352.70 and 13,321.56 is: 19,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,904.20 : 64,352.70 = 13,321.56 : x
  2. Step 2: Convert to fraction form
    42,904.20/64,352.70 = 13,321.56/x
  3. Step 3: Cross multiply
    42,904.20x = 64,352.70 × 13,321.56
  4. Step 4: Simplify right side
    42,904.20x = 857,278,354.21
  5. Step 5: Solve for x
    x = 857,278,354.21/42,904.20
  6. Step 6: Final answer
    x = 19,981.22

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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.