Home / 20,685.23-28,547.11-11,733.51

Finding the Fourth Proportional to 20,685.23, 28,547.11 and 11,733.51

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Solution

The fourth proportional to 20,685.23, 28,547.11 and 11,733.51 is: 16,193.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685.23 : 28,547.11 = 11,733.51 : x
  2. Step 2: Convert to fraction form
    20,685.23/28,547.11 = 11,733.51/x
  3. Step 3: Cross multiply
    20,685.23x = 28,547.11 × 11,733.51
  4. Step 4: Simplify right side
    20,685.23x = 334,957,800.66
  5. Step 5: Solve for x
    x = 334,957,800.66/20,685.23
  6. Step 6: Final answer
    x = 16,193.09

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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.