Home / 28,156.60-42,243.36-8,435.80

Finding the Fourth Proportional to 28,156.60, 42,243.36 and 8,435.80

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Solution

The fourth proportional to 28,156.60, 42,243.36 and 8,435.80 is: 12,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,156.60 : 42,243.36 = 8,435.80 : x
  2. Step 2: Convert to fraction form
    28,156.60/42,243.36 = 8,435.80/x
  3. Step 3: Cross multiply
    28,156.60x = 42,243.36 × 8,435.80
  4. Step 4: Simplify right side
    28,156.60x = 356,356,536.29
  5. Step 5: Solve for x
    x = 356,356,536.29/28,156.60
  6. Step 6: Final answer
    x = 12,656.23

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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.