Home / 20,543.24-28,335.08-19,857.38

Finding the Fourth Proportional to 20,543.24, 28,335.08 and 19,857.38

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Solution

The fourth proportional to 20,543.24, 28,335.08 and 19,857.38 is: 27,389.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,543.24 : 28,335.08 = 19,857.38 : x
  2. Step 2: Convert to fraction form
    20,543.24/28,335.08 = 19,857.38/x
  3. Step 3: Cross multiply
    20,543.24x = 28,335.08 × 19,857.38
  4. Step 4: Simplify right side
    20,543.24x = 562,660,358.86
  5. Step 5: Solve for x
    x = 562,660,358.86/20,543.24
  6. Step 6: Final answer
    x = 27,389.07

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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.