Home / 20,973.15-31,480.53-18,616.59

Finding the Fourth Proportional to 20,973.15, 31,480.53 and 18,616.59

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Solution

The fourth proportional to 20,973.15, 31,480.53 and 18,616.59 is: 27,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,973.15 : 31,480.53 = 18,616.59 : x
  2. Step 2: Convert to fraction form
    20,973.15/31,480.53 = 18,616.59/x
  3. Step 3: Cross multiply
    20,973.15x = 31,480.53 × 18,616.59
  4. Step 4: Simplify right side
    20,973.15x = 586,060,119.99
  5. Step 5: Solve for x
    x = 586,060,119.99/20,973.15
  6. Step 6: Final answer
    x = 27,943.35

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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.