Home / 28,173.94-42,282.33-10,421.40

Finding the Fourth Proportional to 28,173.94, 42,282.33 and 10,421.40

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Solution

The fourth proportional to 28,173.94, 42,282.33 and 10,421.40 is: 15,640.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,173.94 : 42,282.33 = 10,421.40 : x
  2. Step 2: Convert to fraction form
    28,173.94/42,282.33 = 10,421.40/x
  3. Step 3: Cross multiply
    28,173.94x = 42,282.33 × 10,421.40
  4. Step 4: Simplify right side
    28,173.94x = 440,641,073.86
  5. Step 5: Solve for x
    x = 440,641,073.86/28,173.94
  6. Step 6: Final answer
    x = 15,640.02

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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.