Home / 22,740.90-31,155.14-21,888.63

Finding the Fourth Proportional to 22,740.90, 31,155.14 and 21,888.63

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Solution

The fourth proportional to 22,740.90, 31,155.14 and 21,888.63 is: 29,987.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,740.90 : 31,155.14 = 21,888.63 : x
  2. Step 2: Convert to fraction form
    22,740.90/31,155.14 = 21,888.63/x
  3. Step 3: Cross multiply
    22,740.90x = 31,155.14 × 21,888.63
  4. Step 4: Simplify right side
    22,740.90x = 681,943,332.06
  5. Step 5: Solve for x
    x = 681,943,332.06/22,740.90
  6. Step 6: Final answer
    x = 29,987.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.