Home / 28,582.20-39,434.28-18,518.40

Finding the Fourth Proportional to 28,582.20, 39,434.28 and 18,518.40

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Solution

The fourth proportional to 28,582.20, 39,434.28 and 18,518.40 is: 25,549.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,582.20 : 39,434.28 = 18,518.40 : x
  2. Step 2: Convert to fraction form
    28,582.20/39,434.28 = 18,518.40/x
  3. Step 3: Cross multiply
    28,582.20x = 39,434.28 × 18,518.40
  4. Step 4: Simplify right side
    28,582.20x = 730,259,770.75
  5. Step 5: Solve for x
    x = 730,259,770.75/28,582.20
  6. Step 6: Final answer
    x = 25,549.46

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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.