Home / 38,419.50-53,018.91-21,653.10

Finding the Fourth Proportional to 38,419.50, 53,018.91 and 21,653.10

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Solution

The fourth proportional to 38,419.50, 53,018.91 and 21,653.10 is: 29,881.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,419.50 : 53,018.91 = 21,653.10 : x
  2. Step 2: Convert to fraction form
    38,419.50/53,018.91 = 21,653.10/x
  3. Step 3: Cross multiply
    38,419.50x = 53,018.91 × 21,653.10
  4. Step 4: Simplify right side
    38,419.50x = 1,148,023,760.12
  5. Step 5: Solve for x
    x = 1,148,023,760.12/38,419.50
  6. Step 6: Final answer
    x = 29,881.28

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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.