Home / 15,527.45-21,428.43-8,454.38

Finding the Fourth Proportional to 15,527.45, 21,428.43 and 8,454.38

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Solution

The fourth proportional to 15,527.45, 21,428.43 and 8,454.38 is: 11,667.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.45 : 21,428.43 = 8,454.38 : x
  2. Step 2: Convert to fraction form
    15,527.45/21,428.43 = 8,454.38/x
  3. Step 3: Cross multiply
    15,527.45x = 21,428.43 × 8,454.38
  4. Step 4: Simplify right side
    15,527.45x = 181,164,090.02
  5. Step 5: Solve for x
    x = 181,164,090.02/15,527.45
  6. Step 6: Final answer
    x = 11,667.34

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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.