Home / 12,979.77-19,491.53-12,877.71

Finding the Fourth Proportional to 12,979.77, 19,491.53 and 12,877.71

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Solution

The fourth proportional to 12,979.77, 19,491.53 and 12,877.71 is: 19,338.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.77 : 19,491.53 = 12,877.71 : x
  2. Step 2: Convert to fraction form
    12,979.77/19,491.53 = 12,877.71/x
  3. Step 3: Cross multiply
    12,979.77x = 19,491.53 × 12,877.71
  4. Step 4: Simplify right side
    12,979.77x = 251,006,206.41
  5. Step 5: Solve for x
    x = 251,006,206.41/12,979.77
  6. Step 6: Final answer
    x = 19,338.26

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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.