Home / 15,420.70-23,116.88-5,557.57

Finding the Fourth Proportional to 15,420.70, 23,116.88 and 5,557.57

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Solution

The fourth proportional to 15,420.70, 23,116.88 and 5,557.57 is: 8,331.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420.70 : 23,116.88 = 5,557.57 : x
  2. Step 2: Convert to fraction form
    15,420.70/23,116.88 = 5,557.57/x
  3. Step 3: Cross multiply
    15,420.70x = 23,116.88 × 5,557.57
  4. Step 4: Simplify right side
    15,420.70x = 128,473,535.41
  5. Step 5: Solve for x
    x = 128,473,535.41/15,420.70
  6. Step 6: Final answer
    x = 8,331.24

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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.