Home / 30,656.84-42,305.28-18,740.12

Finding the Fourth Proportional to 30,656.84, 42,305.28 and 18,740.12

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Solution

The fourth proportional to 30,656.84, 42,305.28 and 18,740.12 is: 25,860.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,656.84 : 42,305.28 = 18,740.12 : x
  2. Step 2: Convert to fraction form
    30,656.84/42,305.28 = 18,740.12/x
  3. Step 3: Cross multiply
    30,656.84x = 42,305.28 × 18,740.12
  4. Step 4: Simplify right side
    30,656.84x = 792,806,023.83
  5. Step 5: Solve for x
    x = 792,806,023.83/30,656.84
  6. Step 6: Final answer
    x = 25,860.66

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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.