Home / 28,143.30-42,208.20-16,271.40

Finding the Fourth Proportional to 28,143.30, 42,208.20 and 16,271.40

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Solution

The fourth proportional to 28,143.30, 42,208.20 and 16,271.40 is: 24,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,143.30 : 42,208.20 = 16,271.40 : x
  2. Step 2: Convert to fraction form
    28,143.30/42,208.20 = 16,271.40/x
  3. Step 3: Cross multiply
    28,143.30x = 42,208.20 × 16,271.40
  4. Step 4: Simplify right side
    28,143.30x = 686,786,505.48
  5. Step 5: Solve for x
    x = 686,786,505.48/28,143.30
  6. Step 6: Final answer
    x = 24,403.20

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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.