Home / 28,050.96-42,070.68-10,520.40

Finding the Fourth Proportional to 28,050.96, 42,070.68 and 10,520.40

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Solution

The fourth proportional to 28,050.96, 42,070.68 and 10,520.40 is: 15,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,050.96 : 42,070.68 = 10,520.40 : x
  2. Step 2: Convert to fraction form
    28,050.96/42,070.68 = 10,520.40/x
  3. Step 3: Cross multiply
    28,050.96x = 42,070.68 × 10,520.40
  4. Step 4: Simplify right side
    28,050.96x = 442,600,381.87
  5. Step 5: Solve for x
    x = 442,600,381.87/28,050.96
  6. Step 6: Final answer
    x = 15,778.44

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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.