Home / 21,159.30-31,728.69-6,365.46

Finding the Fourth Proportional to 21,159.30, 31,728.69 and 6,365.46

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Solution

The fourth proportional to 21,159.30, 31,728.69 and 6,365.46 is: 9,545.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.30 : 31,728.69 = 6,365.46 : x
  2. Step 2: Convert to fraction form
    21,159.30/31,728.69 = 6,365.46/x
  3. Step 3: Cross multiply
    21,159.30x = 31,728.69 × 6,365.46
  4. Step 4: Simplify right side
    21,159.30x = 201,967,707.05
  5. Step 5: Solve for x
    x = 201,967,707.05/21,159.30
  6. Step 6: Final answer
    x = 9,545.10

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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.