Home / 38,419.13-53,018.81-21,652.13

Finding the Fourth Proportional to 38,419.13, 53,018.81 and 21,652.13

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Solution

The fourth proportional to 38,419.13, 53,018.81 and 21,652.13 is: 29,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,419.13 : 53,018.81 = 21,652.13 : x
  2. Step 2: Convert to fraction form
    38,419.13/53,018.81 = 21,652.13/x
  3. Step 3: Cross multiply
    38,419.13x = 53,018.81 × 21,652.13
  4. Step 4: Simplify right side
    38,419.13x = 1,147,969,793.21
  5. Step 5: Solve for x
    x = 1,147,969,793.21/38,419.13
  6. Step 6: Final answer
    x = 29,880.16

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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.