Home / 15,527.40-21,427.56-8,454

Finding the Fourth Proportional to 15,527.40, 21,427.56 and 8,454

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Solution

The fourth proportional to 15,527.40, 21,427.56 and 8,454 is: 11,666.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,527.40 : 21,427.56 = 8,454 : x
  2. Step 2: Convert to fraction form
    15,527.40/21,427.56 = 8,454/x
  3. Step 3: Cross multiply
    15,527.40x = 21,427.56 × 8,454
  4. Step 4: Simplify right side
    15,527.40x = 181,148,592.24
  5. Step 5: Solve for x
    x = 181,148,592.24/15,527.40
  6. Step 6: Final answer
    x = 11,666.38

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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.