Home / 38,515.48-53,150.70-21,520.06

Finding the Fourth Proportional to 38,515.48, 53,150.70 and 21,520.06

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Solution

The fourth proportional to 38,515.48, 53,150.70 and 21,520.06 is: 29,697.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,515.48 : 53,150.70 = 21,520.06 : x
  2. Step 2: Convert to fraction form
    38,515.48/53,150.70 = 21,520.06/x
  3. Step 3: Cross multiply
    38,515.48x = 53,150.70 × 21,520.06
  4. Step 4: Simplify right side
    38,515.48x = 1,143,806,253.04
  5. Step 5: Solve for x
    x = 1,143,806,253.04/38,515.48
  6. Step 6: Final answer
    x = 29,697.31

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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.