Home / 30,577.05-42,178.40-19,228.55

Finding the Fourth Proportional to 30,577.05, 42,178.40 and 19,228.55

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Solution

The fourth proportional to 30,577.05, 42,178.40 and 19,228.55 is: 26,524.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,577.05 : 42,178.40 = 19,228.55 : x
  2. Step 2: Convert to fraction form
    30,577.05/42,178.40 = 19,228.55/x
  3. Step 3: Cross multiply
    30,577.05x = 42,178.40 × 19,228.55
  4. Step 4: Simplify right side
    30,577.05x = 811,029,166.29
  5. Step 5: Solve for x
    x = 811,029,166.29/30,577.05
  6. Step 6: Final answer
    x = 26,524.11

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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.