Home / 19,020.64-28,535.28-10,255.36

Finding the Fourth Proportional to 19,020.64, 28,535.28 and 10,255.36

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Solution

The fourth proportional to 19,020.64, 28,535.28 and 10,255.36 is: 15,385.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.64 : 28,535.28 = 10,255.36 : x
  2. Step 2: Convert to fraction form
    19,020.64/28,535.28 = 10,255.36/x
  3. Step 3: Cross multiply
    19,020.64x = 28,535.28 × 10,255.36
  4. Step 4: Simplify right side
    19,020.64x = 292,639,569.10
  5. Step 5: Solve for x
    x = 292,639,569.10/19,020.64
  6. Step 6: Final answer
    x = 15,385.37

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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.