Home / 15,369.18-21,209.26-8,655.46

Finding the Fourth Proportional to 15,369.18, 21,209.26 and 8,655.46

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Solution

The fourth proportional to 15,369.18, 21,209.26 and 8,655.46 is: 11,944.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,369.18 : 21,209.26 = 8,655.46 : x
  2. Step 2: Convert to fraction form
    15,369.18/21,209.26 = 8,655.46/x
  3. Step 3: Cross multiply
    15,369.18x = 21,209.26 × 8,655.46
  4. Step 4: Simplify right side
    15,369.18x = 183,575,901.56
  5. Step 5: Solve for x
    x = 183,575,901.56/15,369.18
  6. Step 6: Final answer
    x = 11,944.42

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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.