Home / 20,484.50-28,274.27-11,988.41

Finding the Fourth Proportional to 20,484.50, 28,274.27 and 11,988.41

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Solution

The fourth proportional to 20,484.50, 28,274.27 and 11,988.41 is: 16,547.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.50 : 28,274.27 = 11,988.41 : x
  2. Step 2: Convert to fraction form
    20,484.50/28,274.27 = 11,988.41/x
  3. Step 3: Cross multiply
    20,484.50x = 28,274.27 × 11,988.41
  4. Step 4: Simplify right side
    20,484.50x = 338,963,339.90
  5. Step 5: Solve for x
    x = 338,963,339.90/20,484.50
  6. Step 6: Final answer
    x = 16,547.31

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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.