Home / 30,577.79-42,197.78-18,476.59

Finding the Fourth Proportional to 30,577.79, 42,197.78 and 18,476.59

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Solution

The fourth proportional to 30,577.79, 42,197.78 and 18,476.59 is: 25,497.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,577.79 : 42,197.78 = 18,476.59 : x
  2. Step 2: Convert to fraction form
    30,577.79/42,197.78 = 18,476.59/x
  3. Step 3: Cross multiply
    30,577.79x = 42,197.78 × 18,476.59
  4. Step 4: Simplify right side
    30,577.79x = 779,670,987.59
  5. Step 5: Solve for x
    x = 779,670,987.59/30,577.79
  6. Step 6: Final answer
    x = 25,497.96

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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.