Home / 39,757.50-59,643.54-18,981

Finding the Fourth Proportional to 39,757.50, 59,643.54 and 18,981

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Solution

The fourth proportional to 39,757.50, 59,643.54 and 18,981 is: 28,474.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,757.50 : 59,643.54 = 18,981 : x
  2. Step 2: Convert to fraction form
    39,757.50/59,643.54 = 18,981/x
  3. Step 3: Cross multiply
    39,757.50x = 59,643.54 × 18,981
  4. Step 4: Simplify right side
    39,757.50x = 1,132,094,032.74
  5. Step 5: Solve for x
    x = 1,132,094,032.74/39,757.50
  6. Step 6: Final answer
    x = 28,474.98

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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.