Home / 15,453.40-23,190.90-9,920.20

Finding the Fourth Proportional to 15,453.40, 23,190.90 and 9,920.20

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Solution

The fourth proportional to 15,453.40, 23,190.90 and 9,920.20 is: 14,887.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.40 : 23,190.90 = 9,920.20 : x
  2. Step 2: Convert to fraction form
    15,453.40/23,190.90 = 9,920.20/x
  3. Step 3: Cross multiply
    15,453.40x = 23,190.90 × 9,920.20
  4. Step 4: Simplify right side
    15,453.40x = 230,058,366.18
  5. Step 5: Solve for x
    x = 230,058,366.18/15,453.40
  6. Step 6: Final answer
    x = 14,887.23

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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.