Home / 53,021.16-79,510.80-21,425.25

Finding the Fourth Proportional to 53,021.16, 79,510.80 and 21,425.25

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Solution

The fourth proportional to 53,021.16, 79,510.80 and 21,425.25 is: 32,129.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,021.16 : 79,510.80 = 21,425.25 : x
  2. Step 2: Convert to fraction form
    53,021.16/79,510.80 = 21,425.25/x
  3. Step 3: Cross multiply
    53,021.16x = 79,510.80 × 21,425.25
  4. Step 4: Simplify right side
    53,021.16x = 1,703,538,767.70
  5. Step 5: Solve for x
    x = 1,703,538,767.70/53,021.16
  6. Step 6: Final answer
    x = 32,129.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.