Home / 15,740.33-21,721.87-8,570.51

Finding the Fourth Proportional to 15,740.33, 21,721.87 and 8,570.51

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Solution

The fourth proportional to 15,740.33, 21,721.87 and 8,570.51 is: 11,827.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.33 : 21,721.87 = 8,570.51 : x
  2. Step 2: Convert to fraction form
    15,740.33/21,721.87 = 8,570.51/x
  3. Step 3: Cross multiply
    15,740.33x = 21,721.87 × 8,570.51
  4. Step 4: Simplify right side
    15,740.33x = 186,167,487.61
  5. Step 5: Solve for x
    x = 186,167,487.61/15,740.33
  6. Step 6: Final answer
    x = 11,827.42

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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.