Home / 18,506,128.80-25,492,825.80-15,743,969.64

Finding the Fourth Proportional to 18,506,128.80, 25,492,825.80 and 15,743,969.64

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Solution

The fourth proportional to 18,506,128.80, 25,492,825.80 and 15,743,969.64 is: 21,687,857.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506,128.80 : 25,492,825.80 = 15,743,969.64 : x
  2. Step 2: Convert to fraction form
    18,506,128.80/25,492,825.80 = 15,743,969.64/x
  3. Step 3: Cross multiply
    18,506,128.80x = 25,492,825.80 × 15,743,969.64
  4. Step 4: Simplify right side
    18,506,128.80x = 401,358,275,433,008.75
  5. Step 5: Solve for x
    x = 401,358,275,433,008.75/18,506,128.80
  6. Step 6: Final answer
    x = 21,687,857.02

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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.