Home / 28,447.20-42,637.53-21,404.60

Finding the Fourth Proportional to 28,447.20, 42,637.53 and 21,404.60

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Solution

The fourth proportional to 28,447.20, 42,637.53 and 21,404.60 is: 32,081.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,447.20 : 42,637.53 = 21,404.60 : x
  2. Step 2: Convert to fraction form
    28,447.20/42,637.53 = 21,404.60/x
  3. Step 3: Cross multiply
    28,447.20x = 42,637.53 × 21,404.60
  4. Step 4: Simplify right side
    28,447.20x = 912,639,274.64
  5. Step 5: Solve for x
    x = 912,639,274.64/28,447.20
  6. Step 6: Final answer
    x = 32,081.87

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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.