Home / 30,908.84-42,654.45-18,158.60

Finding the Fourth Proportional to 30,908.84, 42,654.45 and 18,158.60

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Solution

The fourth proportional to 30,908.84, 42,654.45 and 18,158.60 is: 25,059.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.84 : 42,654.45 = 18,158.60 : x
  2. Step 2: Convert to fraction form
    30,908.84/42,654.45 = 18,158.60/x
  3. Step 3: Cross multiply
    30,908.84x = 42,654.45 × 18,158.60
  4. Step 4: Simplify right side
    30,908.84x = 774,545,095.77
  5. Step 5: Solve for x
    x = 774,545,095.77/30,908.84
  6. Step 6: Final answer
    x = 25,059.02

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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.