Home / 20,020.15-30,032.98-6,870.81

Finding the Fourth Proportional to 20,020.15, 30,032.98 and 6,870.81

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Solution

The fourth proportional to 20,020.15, 30,032.98 and 6,870.81 is: 10,307.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,020.15 : 30,032.98 = 6,870.81 : x
  2. Step 2: Convert to fraction form
    20,020.15/30,032.98 = 6,870.81/x
  3. Step 3: Cross multiply
    20,020.15x = 30,032.98 × 6,870.81
  4. Step 4: Simplify right side
    20,020.15x = 206,350,825.82
  5. Step 5: Solve for x
    x = 206,350,825.82/20,020.15
  6. Step 6: Final answer
    x = 10,307.16

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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.