Home / 20,483.79-28,267.65-11,531.36

Finding the Fourth Proportional to 20,483.79, 28,267.65 and 11,531.36

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Solution

The fourth proportional to 20,483.79, 28,267.65 and 11,531.36 is: 15,913.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.79 : 28,267.65 = 11,531.36 : x
  2. Step 2: Convert to fraction form
    20,483.79/28,267.65 = 11,531.36/x
  3. Step 3: Cross multiply
    20,483.79x = 28,267.65 × 11,531.36
  4. Step 4: Simplify right side
    20,483.79x = 325,964,448.50
  5. Step 5: Solve for x
    x = 325,964,448.50/20,483.79
  6. Step 6: Final answer
    x = 15,913.29

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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.