Home / 28,813.60-39,763.26-15,894.36

Finding the Fourth Proportional to 28,813.60, 39,763.26 and 15,894.36

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Solution

The fourth proportional to 28,813.60, 39,763.26 and 15,894.36 is: 21,934.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,813.60 : 39,763.26 = 15,894.36 : x
  2. Step 2: Convert to fraction form
    28,813.60/39,763.26 = 15,894.36/x
  3. Step 3: Cross multiply
    28,813.60x = 39,763.26 × 15,894.36
  4. Step 4: Simplify right side
    28,813.60x = 632,011,360.50
  5. Step 5: Solve for x
    x = 632,011,360.50/28,813.60
  6. Step 6: Final answer
    x = 21,934.48

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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.