Home / 12,666.03-18,988.11-4,869.78

Finding the Fourth Proportional to 12,666.03, 18,988.11 and 4,869.78

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Solution

The fourth proportional to 12,666.03, 18,988.11 and 4,869.78 is: 7,300.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,666.03 : 18,988.11 = 4,869.78 : x
  2. Step 2: Convert to fraction form
    12,666.03/18,988.11 = 4,869.78/x
  3. Step 3: Cross multiply
    12,666.03x = 18,988.11 × 4,869.78
  4. Step 4: Simplify right side
    12,666.03x = 92,467,918.32
  5. Step 5: Solve for x
    x = 92,467,918.32/12,666.03
  6. Step 6: Final answer
    x = 7,300.47

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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.