Home / 28,987.60-43,423.80-16,661.20

Finding the Fourth Proportional to 28,987.60, 43,423.80 and 16,661.20

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Solution

The fourth proportional to 28,987.60, 43,423.80 and 16,661.20 is: 24,958.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.60 : 43,423.80 = 16,661.20 : x
  2. Step 2: Convert to fraction form
    28,987.60/43,423.80 = 16,661.20/x
  3. Step 3: Cross multiply
    28,987.60x = 43,423.80 × 16,661.20
  4. Step 4: Simplify right side
    28,987.60x = 723,492,616.56
  5. Step 5: Solve for x
    x = 723,492,616.56/28,987.60
  6. Step 6: Final answer
    x = 24,958.69

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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.