Home / 28,031.28-42,046.93-19,239.54

Finding the Fourth Proportional to 28,031.28, 42,046.93 and 19,239.54

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Solution

The fourth proportional to 28,031.28, 42,046.93 and 19,239.54 is: 28,859.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.28 : 42,046.93 = 19,239.54 : x
  2. Step 2: Convert to fraction form
    28,031.28/42,046.93 = 19,239.54/x
  3. Step 3: Cross multiply
    28,031.28x = 42,046.93 × 19,239.54
  4. Step 4: Simplify right side
    28,031.28x = 808,963,694.50
  5. Step 5: Solve for x
    x = 808,963,694.50/28,031.28
  6. Step 6: Final answer
    x = 28,859.32

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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.