Home / 20,924.77-28,876.21-11,364.66

Finding the Fourth Proportional to 20,924.77, 28,876.21 and 11,364.66

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Solution

The fourth proportional to 20,924.77, 28,876.21 and 11,364.66 is: 15,683.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,924.77 : 28,876.21 = 11,364.66 : x
  2. Step 2: Convert to fraction form
    20,924.77/28,876.21 = 11,364.66/x
  3. Step 3: Cross multiply
    20,924.77x = 28,876.21 × 11,364.66
  4. Step 4: Simplify right side
    20,924.77x = 328,168,308.74
  5. Step 5: Solve for x
    x = 328,168,308.74/20,924.77
  6. Step 6: Final answer
    x = 15,683.25

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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.