Home / 19,857.40-27,403.85-11,473.90

Finding the Fourth Proportional to 19,857.40, 27,403.85 and 11,473.90

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Solution

The fourth proportional to 19,857.40, 27,403.85 and 11,473.90 is: 15,834.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,857.40 : 27,403.85 = 11,473.90 : x
  2. Step 2: Convert to fraction form
    19,857.40/27,403.85 = 11,473.90/x
  3. Step 3: Cross multiply
    19,857.40x = 27,403.85 × 11,473.90
  4. Step 4: Simplify right side
    19,857.40x = 314,429,034.52
  5. Step 5: Solve for x
    x = 314,429,034.52/19,857.40
  6. Step 6: Final answer
    x = 15,834.35

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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.