Home / 28,014.80-42,017.40-10,475.60

Finding the Fourth Proportional to 28,014.80, 42,017.40 and 10,475.60

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Solution

The fourth proportional to 28,014.80, 42,017.40 and 10,475.60 is: 15,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.80 : 42,017.40 = 10,475.60 : x
  2. Step 2: Convert to fraction form
    28,014.80/42,017.40 = 10,475.60/x
  3. Step 3: Cross multiply
    28,014.80x = 42,017.40 × 10,475.60
  4. Step 4: Simplify right side
    28,014.80x = 440,157,475.44
  5. Step 5: Solve for x
    x = 440,157,475.44/28,014.80
  6. Step 6: Final answer
    x = 15,711.61

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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.