Home / 21,206.16-31,812.90-7,166.30

Finding the Fourth Proportional to 21,206.16, 31,812.90 and 7,166.30

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Solution

The fourth proportional to 21,206.16, 31,812.90 and 7,166.30 is: 10,750.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,206.16 : 31,812.90 = 7,166.30 : x
  2. Step 2: Convert to fraction form
    21,206.16/31,812.90 = 7,166.30/x
  3. Step 3: Cross multiply
    21,206.16x = 31,812.90 × 7,166.30
  4. Step 4: Simplify right side
    21,206.16x = 227,980,785.27
  5. Step 5: Solve for x
    x = 227,980,785.27/21,206.16
  6. Step 6: Final answer
    x = 10,750.69

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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.