Home / 15,237.20-21,040.34-9,581.42

Finding the Fourth Proportional to 15,237.20, 21,040.34 and 9,581.42

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Solution

The fourth proportional to 15,237.20, 21,040.34 and 9,581.42 is: 13,230.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,237.20 : 21,040.34 = 9,581.42 : x
  2. Step 2: Convert to fraction form
    15,237.20/21,040.34 = 9,581.42/x
  3. Step 3: Cross multiply
    15,237.20x = 21,040.34 × 9,581.42
  4. Step 4: Simplify right side
    15,237.20x = 201,596,339.18
  5. Step 5: Solve for x
    x = 201,596,339.18/15,237.20
  6. Step 6: Final answer
    x = 13,230.53

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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.