Home / 19,861.48-27,402.13-11,357.55

Finding the Fourth Proportional to 19,861.48, 27,402.13 and 11,357.55

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Solution

The fourth proportional to 19,861.48, 27,402.13 and 11,357.55 is: 15,669.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.48 : 27,402.13 = 11,357.55 : x
  2. Step 2: Convert to fraction form
    19,861.48/27,402.13 = 11,357.55/x
  3. Step 3: Cross multiply
    19,861.48x = 27,402.13 × 11,357.55
  4. Step 4: Simplify right side
    19,861.48x = 311,221,075.78
  5. Step 5: Solve for x
    x = 311,221,075.78/19,861.48
  6. Step 6: Final answer
    x = 15,669.58

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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.