Home / 12,503.30-18,756.08-3,618.50

Finding the Fourth Proportional to 12,503.30, 18,756.08 and 3,618.50

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Solution

The fourth proportional to 12,503.30, 18,756.08 and 3,618.50 is: 5,428.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.30 : 18,756.08 = 3,618.50 : x
  2. Step 2: Convert to fraction form
    12,503.30/18,756.08 = 3,618.50/x
  3. Step 3: Cross multiply
    12,503.30x = 18,756.08 × 3,618.50
  4. Step 4: Simplify right side
    12,503.30x = 67,868,875.48
  5. Step 5: Solve for x
    x = 67,868,875.48/12,503.30
  6. Step 6: Final answer
    x = 5,428.08

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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.