Home / 38,240-52,779.63-21,250.07

Finding the Fourth Proportional to 38,240, 52,779.63 and 21,250.07

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Solution

The fourth proportional to 38,240, 52,779.63 and 21,250.07 is: 29,329.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,240 : 52,779.63 = 21,250.07 : x
  2. Step 2: Convert to fraction form
    38,240/52,779.63 = 21,250.07/x
  3. Step 3: Cross multiply
    38,240x = 52,779.63 × 21,250.07
  4. Step 4: Simplify right side
    38,240x = 1,121,570,832.07
  5. Step 5: Solve for x
    x = 1,121,570,832.07/38,240
  6. Step 6: Final answer
    x = 29,329.78

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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.