Home / 30,655.60-42,304.08-18,084.40

Finding the Fourth Proportional to 30,655.60, 42,304.08 and 18,084.40

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Solution

The fourth proportional to 30,655.60, 42,304.08 and 18,084.40 is: 24,956.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.60 : 42,304.08 = 18,084.40 : x
  2. Step 2: Convert to fraction form
    30,655.60/42,304.08 = 18,084.40/x
  3. Step 3: Cross multiply
    30,655.60x = 42,304.08 × 18,084.40
  4. Step 4: Simplify right side
    30,655.60x = 765,043,904.35
  5. Step 5: Solve for x
    x = 765,043,904.35/30,655.60
  6. Step 6: Final answer
    x = 24,956.09

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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.