Home / 38,499.48-53,130.06-21,729.24

Finding the Fourth Proportional to 38,499.48, 53,130.06 and 21,729.24

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Solution

The fourth proportional to 38,499.48, 53,130.06 and 21,729.24 is: 29,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,499.48 : 53,130.06 = 21,729.24 : x
  2. Step 2: Convert to fraction form
    38,499.48/53,130.06 = 21,729.24/x
  3. Step 3: Cross multiply
    38,499.48x = 53,130.06 × 21,729.24
  4. Step 4: Simplify right side
    38,499.48x = 1,154,475,824.95
  5. Step 5: Solve for x
    x = 1,154,475,824.95/38,499.48
  6. Step 6: Final answer
    x = 29,986.79

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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.