Home / 21,760.18-30,029.33-13,261.19

Finding the Fourth Proportional to 21,760.18, 30,029.33 and 13,261.19

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Solution

The fourth proportional to 21,760.18, 30,029.33 and 13,261.19 is: 18,300.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.18 : 30,029.33 = 13,261.19 : x
  2. Step 2: Convert to fraction form
    21,760.18/30,029.33 = 13,261.19/x
  3. Step 3: Cross multiply
    21,760.18x = 30,029.33 × 13,261.19
  4. Step 4: Simplify right side
    21,760.18x = 398,224,533.71
  5. Step 5: Solve for x
    x = 398,224,533.71/21,760.18
  6. Step 6: Final answer
    x = 18,300.61

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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.