Home / 21,907.80-32,853.60-7,117.20

Finding the Fourth Proportional to 21,907.80, 32,853.60 and 7,117.20

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Solution

The fourth proportional to 21,907.80, 32,853.60 and 7,117.20 is: 10,673.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,907.80 : 32,853.60 = 7,117.20 : x
  2. Step 2: Convert to fraction form
    21,907.80/32,853.60 = 7,117.20/x
  3. Step 3: Cross multiply
    21,907.80x = 32,853.60 × 7,117.20
  4. Step 4: Simplify right side
    21,907.80x = 233,825,641.92
  5. Step 5: Solve for x
    x = 233,825,641.92/21,907.80
  6. Step 6: Final answer
    x = 10,673.17

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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.