Home / 19,215.48-28,789.20-8,805.36

Finding the Fourth Proportional to 19,215.48, 28,789.20 and 8,805.36

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Solution

The fourth proportional to 19,215.48, 28,789.20 and 8,805.36 is: 13,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.48 : 28,789.20 = 8,805.36 : x
  2. Step 2: Convert to fraction form
    19,215.48/28,789.20 = 8,805.36/x
  3. Step 3: Cross multiply
    19,215.48x = 28,789.20 × 8,805.36
  4. Step 4: Simplify right side
    19,215.48x = 253,499,270.11
  5. Step 5: Solve for x
    x = 253,499,270.11/19,215.48
  6. Step 6: Final answer
    x = 13,192.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.