Home / 28,155.81-38,841.33-18,599.43

Finding the Fourth Proportional to 28,155.81, 38,841.33 and 18,599.43

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Solution

The fourth proportional to 28,155.81, 38,841.33 and 18,599.43 is: 25,658.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,155.81 : 38,841.33 = 18,599.43 : x
  2. Step 2: Convert to fraction form
    28,155.81/38,841.33 = 18,599.43/x
  3. Step 3: Cross multiply
    28,155.81x = 38,841.33 × 18,599.43
  4. Step 4: Simplify right side
    28,155.81x = 722,426,598.44
  5. Step 5: Solve for x
    x = 722,426,598.44/28,155.81
  6. Step 6: Final answer
    x = 25,658.17

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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.