Home / 38,486.10-53,110.65-21,719.10

Finding the Fourth Proportional to 38,486.10, 53,110.65 and 21,719.10

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Solution

The fourth proportional to 38,486.10, 53,110.65 and 21,719.10 is: 29,972.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,486.10 : 53,110.65 = 21,719.10 : x
  2. Step 2: Convert to fraction form
    38,486.10/53,110.65 = 21,719.10/x
  3. Step 3: Cross multiply
    38,486.10x = 53,110.65 × 21,719.10
  4. Step 4: Simplify right side
    38,486.10x = 1,153,515,518.42
  5. Step 5: Solve for x
    x = 1,153,515,518.42/38,486.10
  6. Step 6: Final answer
    x = 29,972.26

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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.