Home / 28,015.60-42,023.40-12,434.80

Finding the Fourth Proportional to 28,015.60, 42,023.40 and 12,434.80

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Solution

The fourth proportional to 28,015.60, 42,023.40 and 12,434.80 is: 18,652.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.60 : 42,023.40 = 12,434.80 : x
  2. Step 2: Convert to fraction form
    28,015.60/42,023.40 = 12,434.80/x
  3. Step 3: Cross multiply
    28,015.60x = 42,023.40 × 12,434.80
  4. Step 4: Simplify right side
    28,015.60x = 522,552,574.32
  5. Step 5: Solve for x
    x = 522,552,574.32/28,015.60
  6. Step 6: Final answer
    x = 18,652.20

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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.