Home / 15,378.18-21,226.05-14,448.90

Finding the Fourth Proportional to 15,378.18, 21,226.05 and 14,448.90

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Solution

The fourth proportional to 15,378.18, 21,226.05 and 14,448.90 is: 19,943.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,378.18 : 21,226.05 = 14,448.90 : x
  2. Step 2: Convert to fraction form
    15,378.18/21,226.05 = 14,448.90/x
  3. Step 3: Cross multiply
    15,378.18x = 21,226.05 × 14,448.90
  4. Step 4: Simplify right side
    15,378.18x = 306,693,073.85
  5. Step 5: Solve for x
    x = 306,693,073.85/15,378.18
  6. Step 6: Final answer
    x = 19,943.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.