Home / 12,706.58-19,077.32-6,470.78

Finding the Fourth Proportional to 12,706.58, 19,077.32 and 6,470.78

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Solution

The fourth proportional to 12,706.58, 19,077.32 and 6,470.78 is: 9,715.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,706.58 : 19,077.32 = 6,470.78 : x
  2. Step 2: Convert to fraction form
    12,706.58/19,077.32 = 6,470.78/x
  3. Step 3: Cross multiply
    12,706.58x = 19,077.32 × 6,470.78
  4. Step 4: Simplify right side
    12,706.58x = 123,445,140.71
  5. Step 5: Solve for x
    x = 123,445,140.71/12,706.58
  6. Step 6: Final answer
    x = 9,715.06

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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.