Home / 21,941.12-30,246.42-15,547.96

Finding the Fourth Proportional to 21,941.12, 30,246.42 and 15,547.96

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Solution

The fourth proportional to 21,941.12, 30,246.42 and 15,547.96 is: 21,433.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,941.12 : 30,246.42 = 15,547.96 : x
  2. Step 2: Convert to fraction form
    21,941.12/30,246.42 = 15,547.96/x
  3. Step 3: Cross multiply
    21,941.12x = 30,246.42 × 15,547.96
  4. Step 4: Simplify right side
    21,941.12x = 470,270,128.30
  5. Step 5: Solve for x
    x = 470,270,128.30/21,941.12
  6. Step 6: Final answer
    x = 21,433.28

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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.