Home / 28,158.79-38,854.81-16,219.80

Finding the Fourth Proportional to 28,158.79, 38,854.81 and 16,219.80

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Solution

The fourth proportional to 28,158.79, 38,854.81 and 16,219.80 is: 22,380.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,158.79 : 38,854.81 = 16,219.80 : x
  2. Step 2: Convert to fraction form
    28,158.79/38,854.81 = 16,219.80/x
  3. Step 3: Cross multiply
    28,158.79x = 38,854.81 × 16,219.80
  4. Step 4: Simplify right side
    28,158.79x = 630,217,247.24
  5. Step 5: Solve for x
    x = 630,217,247.24/28,158.79
  6. Step 6: Final answer
    x = 22,380.84

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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.