Home / 15,071.40-20,794.32-8,782.56

Finding the Fourth Proportional to 15,071.40, 20,794.32 and 8,782.56

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Solution

The fourth proportional to 15,071.40, 20,794.32 and 8,782.56 is: 12,117.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,071.40 : 20,794.32 = 8,782.56 : x
  2. Step 2: Convert to fraction form
    15,071.40/20,794.32 = 8,782.56/x
  3. Step 3: Cross multiply
    15,071.40x = 20,794.32 × 8,782.56
  4. Step 4: Simplify right side
    15,071.40x = 182,627,363.06
  5. Step 5: Solve for x
    x = 182,627,363.06/15,071.40
  6. Step 6: Final answer
    x = 12,117.48

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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.