Home / 15,330.24-21,157.44-10,040.40

Finding the Fourth Proportional to 15,330.24, 21,157.44 and 10,040.40

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Solution

The fourth proportional to 15,330.24, 21,157.44 and 10,040.40 is: 13,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,330.24 : 21,157.44 = 10,040.40 : x
  2. Step 2: Convert to fraction form
    15,330.24/21,157.44 = 10,040.40/x
  3. Step 3: Cross multiply
    15,330.24x = 21,157.44 × 10,040.40
  4. Step 4: Simplify right side
    15,330.24x = 212,429,160.58
  5. Step 5: Solve for x
    x = 212,429,160.58/15,330.24
  6. Step 6: Final answer
    x = 13,856.87

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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.