Home / 19,800.49-27,322.12-15,777.52

Finding the Fourth Proportional to 19,800.49, 27,322.12 and 15,777.52

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Solution

The fourth proportional to 19,800.49, 27,322.12 and 15,777.52 is: 21,770.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,800.49 : 27,322.12 = 15,777.52 : x
  2. Step 2: Convert to fraction form
    19,800.49/27,322.12 = 15,777.52/x
  3. Step 3: Cross multiply
    19,800.49x = 27,322.12 × 15,777.52
  4. Step 4: Simplify right side
    19,800.49x = 431,075,294.74
  5. Step 5: Solve for x
    x = 431,075,294.74/19,800.49
  6. Step 6: Final answer
    x = 21,770.94

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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.