Home / 20,482.70-28,264.31-11,407.37

Finding the Fourth Proportional to 20,482.70, 28,264.31 and 11,407.37

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Solution

The fourth proportional to 20,482.70, 28,264.31 and 11,407.37 is: 15,741.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.70 : 28,264.31 = 11,407.37 : x
  2. Step 2: Convert to fraction form
    20,482.70/28,264.31 = 11,407.37/x
  3. Step 3: Cross multiply
    20,482.70x = 28,264.31 × 11,407.37
  4. Step 4: Simplify right side
    20,482.70x = 322,421,243.61
  5. Step 5: Solve for x
    x = 322,421,243.61/20,482.70
  6. Step 6: Final answer
    x = 15,741.15

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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.