Home / 28,147.98-38,844.36-15,401.31

Finding the Fourth Proportional to 28,147.98, 38,844.36 and 15,401.31

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Solution

The fourth proportional to 28,147.98, 38,844.36 and 15,401.31 is: 21,253.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,147.98 : 38,844.36 = 15,401.31 : x
  2. Step 2: Convert to fraction form
    28,147.98/38,844.36 = 15,401.31/x
  3. Step 3: Cross multiply
    28,147.98x = 38,844.36 × 15,401.31
  4. Step 4: Simplify right side
    28,147.98x = 598,254,030.11
  5. Step 5: Solve for x
    x = 598,254,030.11/28,147.98
  6. Step 6: Final answer
    x = 21,253.89

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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.