Home / 30,346.79-45,517.95-12,814.88

Finding the Fourth Proportional to 30,346.79, 45,517.95 and 12,814.88

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Solution

The fourth proportional to 30,346.79, 45,517.95 and 12,814.88 is: 19,221.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,346.79 : 45,517.95 = 12,814.88 : x
  2. Step 2: Convert to fraction form
    30,346.79/45,517.95 = 12,814.88/x
  3. Step 3: Cross multiply
    30,346.79x = 45,517.95 × 12,814.88
  4. Step 4: Simplify right side
    30,346.79x = 583,306,839.51
  5. Step 5: Solve for x
    x = 583,306,839.51/30,346.79
  6. Step 6: Final answer
    x = 19,221.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.