Home / 12,639.78-17,444.54-10,511.67

Finding the Fourth Proportional to 12,639.78, 17,444.54 and 10,511.67

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Solution

The fourth proportional to 12,639.78, 17,444.54 and 10,511.67 is: 14,507.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.78 : 17,444.54 = 10,511.67 : x
  2. Step 2: Convert to fraction form
    12,639.78/17,444.54 = 10,511.67/x
  3. Step 3: Cross multiply
    12,639.78x = 17,444.54 × 10,511.67
  4. Step 4: Simplify right side
    12,639.78x = 183,371,247.78
  5. Step 5: Solve for x
    x = 183,371,247.78/12,639.78
  6. Step 6: Final answer
    x = 14,507.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.