Home / 20,215.65-27,897.51-11,263.05

Finding the Fourth Proportional to 20,215.65, 27,897.51 and 11,263.05

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Solution

The fourth proportional to 20,215.65, 27,897.51 and 11,263.05 is: 15,542.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,215.65 : 27,897.51 = 11,263.05 : x
  2. Step 2: Convert to fraction form
    20,215.65/27,897.51 = 11,263.05/x
  3. Step 3: Cross multiply
    20,215.65x = 27,897.51 × 11,263.05
  4. Step 4: Simplify right side
    20,215.65x = 314,211,050.01
  5. Step 5: Solve for x
    x = 314,211,050.01/20,215.65
  6. Step 6: Final answer
    x = 15,542.96

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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.