Home / 21,119.49-31,658.76-11,750.94

Finding the Fourth Proportional to 21,119.49, 31,658.76 and 11,750.94

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Solution

The fourth proportional to 21,119.49, 31,658.76 and 11,750.94 is: 17,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,119.49 : 31,658.76 = 11,750.94 : x
  2. Step 2: Convert to fraction form
    21,119.49/31,658.76 = 11,750.94/x
  3. Step 3: Cross multiply
    21,119.49x = 31,658.76 × 11,750.94
  4. Step 4: Simplify right side
    21,119.49x = 372,020,189.23
  5. Step 5: Solve for x
    x = 372,020,189.23/21,119.49
  6. Step 6: Final answer
    x = 17,615.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.