Home / 15,288.11-21,087.88-11,045.41

Finding the Fourth Proportional to 15,288.11, 21,087.88 and 11,045.41

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Solution

The fourth proportional to 15,288.11, 21,087.88 and 11,045.41 is: 15,235.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.11 : 21,087.88 = 11,045.41 : x
  2. Step 2: Convert to fraction form
    15,288.11/21,087.88 = 11,045.41/x
  3. Step 3: Cross multiply
    15,288.11x = 21,087.88 × 11,045.41
  4. Step 4: Simplify right side
    15,288.11x = 232,924,280.63
  5. Step 5: Solve for x
    x = 232,924,280.63/15,288.11
  6. Step 6: Final answer
    x = 15,235.65

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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.