Home / 20,310.65-28,028.51-11,358.05

Finding the Fourth Proportional to 20,310.65, 28,028.51 and 11,358.05

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Solution

The fourth proportional to 20,310.65, 28,028.51 and 11,358.05 is: 15,674.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,310.65 : 28,028.51 = 11,358.05 : x
  2. Step 2: Convert to fraction form
    20,310.65/28,028.51 = 11,358.05/x
  3. Step 3: Cross multiply
    20,310.65x = 28,028.51 × 11,358.05
  4. Step 4: Simplify right side
    20,310.65x = 318,349,161.22
  5. Step 5: Solve for x
    x = 318,349,161.22/20,310.65
  6. Step 6: Final answer
    x = 15,674.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.