Home / 19,715.83-27,200.85-12,646.15

Finding the Fourth Proportional to 19,715.83, 27,200.85 and 12,646.15

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Solution

The fourth proportional to 19,715.83, 27,200.85 and 12,646.15 is: 17,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.83 : 27,200.85 = 12,646.15 : x
  2. Step 2: Convert to fraction form
    19,715.83/27,200.85 = 12,646.15/x
  3. Step 3: Cross multiply
    19,715.83x = 27,200.85 × 12,646.15
  4. Step 4: Simplify right side
    19,715.83x = 343,986,029.23
  5. Step 5: Solve for x
    x = 343,986,029.23/19,715.83
  6. Step 6: Final answer
    x = 17,447.20

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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.