Home / 28,225.85-38,935.80-18,155.52

Finding the Fourth Proportional to 28,225.85, 38,935.80 and 18,155.52

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Solution

The fourth proportional to 28,225.85, 38,935.80 and 18,155.52 is: 25,044.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,225.85 : 38,935.80 = 18,155.52 : x
  2. Step 2: Convert to fraction form
    28,225.85/38,935.80 = 18,155.52/x
  3. Step 3: Cross multiply
    28,225.85x = 38,935.80 × 18,155.52
  4. Step 4: Simplify right side
    28,225.85x = 706,899,695.62
  5. Step 5: Solve for x
    x = 706,899,695.62/28,225.85
  6. Step 6: Final answer
    x = 25,044.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.