Home / 35,639.60-53,418.06-13,438.76

Finding the Fourth Proportional to 35,639.60, 53,418.06 and 13,438.76

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Solution

The fourth proportional to 35,639.60, 53,418.06 and 13,438.76 is: 20,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,639.60 : 53,418.06 = 13,438.76 : x
  2. Step 2: Convert to fraction form
    35,639.60/53,418.06 = 13,438.76/x
  3. Step 3: Cross multiply
    35,639.60x = 53,418.06 × 13,438.76
  4. Step 4: Simplify right side
    35,639.60x = 717,872,488.01
  5. Step 5: Solve for x
    x = 717,872,488.01/35,639.60
  6. Step 6: Final answer
    x = 20,142.55

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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.