Home / 14,999.96-20,686.56-9,689.18

Finding the Fourth Proportional to 14,999.96, 20,686.56 and 9,689.18

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Solution

The fourth proportional to 14,999.96, 20,686.56 and 9,689.18 is: 13,362.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,999.96 : 20,686.56 = 9,689.18 : x
  2. Step 2: Convert to fraction form
    14,999.96/20,686.56 = 9,689.18/x
  3. Step 3: Cross multiply
    14,999.96x = 20,686.56 × 9,689.18
  4. Step 4: Simplify right side
    14,999.96x = 200,435,803.42
  5. Step 5: Solve for x
    x = 200,435,803.42/14,999.96
  6. Step 6: Final answer
    x = 13,362.42

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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.