Home / 28,220.45-42,331.56-10,455.53

Finding the Fourth Proportional to 28,220.45, 42,331.56 and 10,455.53

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Solution

The fourth proportional to 28,220.45, 42,331.56 and 10,455.53 is: 15,683.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.45 : 42,331.56 = 10,455.53 : x
  2. Step 2: Convert to fraction form
    28,220.45/42,331.56 = 10,455.53/x
  3. Step 3: Cross multiply
    28,220.45x = 42,331.56 × 10,455.53
  4. Step 4: Simplify right side
    28,220.45x = 442,598,941.59
  5. Step 5: Solve for x
    x = 442,598,941.59/28,220.45
  6. Step 6: Final answer
    x = 15,683.62

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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.