Home / 22,570.90-31,115.38-15,835.66

Finding the Fourth Proportional to 22,570.90, 31,115.38 and 15,835.66

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Solution

The fourth proportional to 22,570.90, 31,115.38 and 15,835.66 is: 21,830.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,570.90 : 31,115.38 = 15,835.66 : x
  2. Step 2: Convert to fraction form
    22,570.90/31,115.38 = 15,835.66/x
  3. Step 3: Cross multiply
    22,570.90x = 31,115.38 × 15,835.66
  4. Step 4: Simplify right side
    22,570.90x = 492,732,578.45
  5. Step 5: Solve for x
    x = 492,732,578.45/22,570.90
  6. Step 6: Final answer
    x = 21,830.44

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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.