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Finding the Fourth Proportional to 27,740.62, 38,281.98 and 15,803.98

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Solution

The fourth proportional to 27,740.62, 38,281.98 and 15,803.98 is: 21,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,740.62 : 38,281.98 = 15,803.98 : x
  2. Step 2: Convert to fraction form
    27,740.62/38,281.98 = 15,803.98/x
  3. Step 3: Cross multiply
    27,740.62x = 38,281.98 × 15,803.98
  4. Step 4: Simplify right side
    27,740.62x = 605,007,646.28
  5. Step 5: Solve for x
    x = 605,007,646.28/27,740.62
  6. Step 6: Final answer
    x = 21,809.45

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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.