Home / 38,643.53-53,328.92-21,649.03

Finding the Fourth Proportional to 38,643.53, 53,328.92 and 21,649.03

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Solution

The fourth proportional to 38,643.53, 53,328.92 and 21,649.03 is: 29,876.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,643.53 : 53,328.92 = 21,649.03 : x
  2. Step 2: Convert to fraction form
    38,643.53/53,328.92 = 21,649.03/x
  3. Step 3: Cross multiply
    38,643.53x = 53,328.92 × 21,649.03
  4. Step 4: Simplify right side
    38,643.53x = 1,154,519,147.38
  5. Step 5: Solve for x
    x = 1,154,519,147.38/38,643.53
  6. Step 6: Final answer
    x = 29,876.13

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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.