Home / 20,888.15-31,338.72-6,848.28

Finding the Fourth Proportional to 20,888.15, 31,338.72 and 6,848.28

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Solution

The fourth proportional to 20,888.15, 31,338.72 and 6,848.28 is: 10,274.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.15 : 31,338.72 = 6,848.28 : x
  2. Step 2: Convert to fraction form
    20,888.15/31,338.72 = 6,848.28/x
  3. Step 3: Cross multiply
    20,888.15x = 31,338.72 × 6,848.28
  4. Step 4: Simplify right side
    20,888.15x = 214,616,329.40
  5. Step 5: Solve for x
    x = 214,616,329.40/20,888.15
  6. Step 6: Final answer
    x = 10,274.55

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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.