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Finding the Fourth Proportional to 19,228.80, 26,959.20 and 19,228.80

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Solution

The fourth proportional to 19,228.80, 26,959.20 and 19,228.80 is: 26,959.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,228.80 : 26,959.20 = 19,228.80 : x
  2. Step 2: Convert to fraction form
    19,228.80/26,959.20 = 19,228.80/x
  3. Step 3: Cross multiply
    19,228.80x = 26,959.20 × 19,228.80
  4. Step 4: Simplify right side
    19,228.80x = 518,393,064.96
  5. Step 5: Solve for x
    x = 518,393,064.96/19,228.80
  6. Step 6: Final answer
    x = 26,959.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.