Home / 38,719.83-53,435.52-21,729.51

Finding the Fourth Proportional to 38,719.83, 53,435.52 and 21,729.51

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Solution

The fourth proportional to 38,719.83, 53,435.52 and 21,729.51 is: 29,987.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,719.83 : 53,435.52 = 21,729.51 : x
  2. Step 2: Convert to fraction form
    38,719.83/53,435.52 = 21,729.51/x
  3. Step 3: Cross multiply
    38,719.83x = 53,435.52 × 21,729.51
  4. Step 4: Simplify right side
    38,719.83x = 1,161,127,666.20
  5. Step 5: Solve for x
    x = 1,161,127,666.20/38,719.83
  6. Step 6: Final answer
    x = 29,987.93

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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.