Home / 20,706.08-28,574.50-11,274.88

Finding the Fourth Proportional to 20,706.08, 28,574.50 and 11,274.88

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Solution

The fourth proportional to 20,706.08, 28,574.50 and 11,274.88 is: 15,559.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.08 : 28,574.50 = 11,274.88 : x
  2. Step 2: Convert to fraction form
    20,706.08/28,574.50 = 11,274.88/x
  3. Step 3: Cross multiply
    20,706.08x = 28,574.50 × 11,274.88
  4. Step 4: Simplify right side
    20,706.08x = 322,174,058.56
  5. Step 5: Solve for x
    x = 322,174,058.56/20,706.08
  6. Step 6: Final answer
    x = 15,559.39

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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.