Home / 12,511.95-18,775.63-5,116.45

Finding the Fourth Proportional to 12,511.95, 18,775.63 and 5,116.45

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Solution

The fourth proportional to 12,511.95, 18,775.63 and 5,116.45 is: 7,677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.95 : 18,775.63 = 5,116.45 : x
  2. Step 2: Convert to fraction form
    12,511.95/18,775.63 = 5,116.45/x
  3. Step 3: Cross multiply
    12,511.95x = 18,775.63 × 5,116.45
  4. Step 4: Simplify right side
    12,511.95x = 96,064,572.11
  5. Step 5: Solve for x
    x = 96,064,572.11/12,511.95
  6. Step 6: Final answer
    x = 7,677.83

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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.