Home / 30,199.55-45,253.14-12,659.81

Finding the Fourth Proportional to 30,199.55, 45,253.14 and 12,659.81

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Solution

The fourth proportional to 30,199.55, 45,253.14 and 12,659.81 is: 18,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,199.55 : 45,253.14 = 12,659.81 : x
  2. Step 2: Convert to fraction form
    30,199.55/45,253.14 = 12,659.81/x
  3. Step 3: Cross multiply
    30,199.55x = 45,253.14 × 12,659.81
  4. Step 4: Simplify right side
    30,199.55x = 572,896,154.30
  5. Step 5: Solve for x
    x = 572,896,154.30/30,199.55
  6. Step 6: Final answer
    x = 18,970.35

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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.