Home / 19,672.07-27,158.49-12,977.15

Finding the Fourth Proportional to 19,672.07, 27,158.49 and 12,977.15

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Solution

The fourth proportional to 19,672.07, 27,158.49 and 12,977.15 is: 17,915.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.07 : 27,158.49 = 12,977.15 : x
  2. Step 2: Convert to fraction form
    19,672.07/27,158.49 = 12,977.15/x
  3. Step 3: Cross multiply
    19,672.07x = 27,158.49 × 12,977.15
  4. Step 4: Simplify right side
    19,672.07x = 352,439,662.71
  5. Step 5: Solve for x
    x = 352,439,662.71/19,672.07
  6. Step 6: Final answer
    x = 17,915.74

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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.