Home / 28,854.28-39,814.50-18,258.40

Finding the Fourth Proportional to 28,854.28, 39,814.50 and 18,258.40

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Solution

The fourth proportional to 28,854.28, 39,814.50 and 18,258.40 is: 25,193.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,854.28 : 39,814.50 = 18,258.40 : x
  2. Step 2: Convert to fraction form
    28,854.28/39,814.50 = 18,258.40/x
  3. Step 3: Cross multiply
    28,854.28x = 39,814.50 × 18,258.40
  4. Step 4: Simplify right side
    28,854.28x = 726,949,066.80
  5. Step 5: Solve for x
    x = 726,949,066.80/28,854.28
  6. Step 6: Final answer
    x = 25,193.80

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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.