Home / 19,715.08-27,199.82-12,645.40

Finding the Fourth Proportional to 19,715.08, 27,199.82 and 12,645.40

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Solution

The fourth proportional to 19,715.08, 27,199.82 and 12,645.40 is: 17,446.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,715.08 : 27,199.82 = 12,645.40 : x
  2. Step 2: Convert to fraction form
    19,715.08/27,199.82 = 12,645.40/x
  3. Step 3: Cross multiply
    19,715.08x = 27,199.82 × 12,645.40
  4. Step 4: Simplify right side
    19,715.08x = 343,952,404.60
  5. Step 5: Solve for x
    x = 343,952,404.60/19,715.08
  6. Step 6: Final answer
    x = 17,446.16

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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.