Home / 19,345.23-26,711.78-15,556.25

Finding the Fourth Proportional to 19,345.23, 26,711.78 and 15,556.25

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Solution

The fourth proportional to 19,345.23, 26,711.78 and 15,556.25 is: 21,479.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,345.23 : 26,711.78 = 15,556.25 : x
  2. Step 2: Convert to fraction form
    19,345.23/26,711.78 = 15,556.25/x
  3. Step 3: Cross multiply
    19,345.23x = 26,711.78 × 15,556.25
  4. Step 4: Simplify right side
    19,345.23x = 415,535,116.62
  5. Step 5: Solve for x
    x = 415,535,116.62/19,345.23
  6. Step 6: Final answer
    x = 21,479.98

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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.