Home / 21,330.81-29,434.19-15,032.25

Finding the Fourth Proportional to 21,330.81, 29,434.19 and 15,032.25

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Solution

The fourth proportional to 21,330.81, 29,434.19 and 15,032.25 is: 20,742.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,330.81 : 29,434.19 = 15,032.25 : x
  2. Step 2: Convert to fraction form
    21,330.81/29,434.19 = 15,032.25/x
  3. Step 3: Cross multiply
    21,330.81x = 29,434.19 × 15,032.25
  4. Step 4: Simplify right side
    21,330.81x = 442,462,027.47
  5. Step 5: Solve for x
    x = 442,462,027.47/21,330.81
  6. Step 6: Final answer
    x = 20,742.86

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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.