Home / 20,526.78-28,321.74-12,566.10

Finding the Fourth Proportional to 20,526.78, 28,321.74 and 12,566.10

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Solution

The fourth proportional to 20,526.78, 28,321.74 and 12,566.10 is: 17,338.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.78 : 28,321.74 = 12,566.10 : x
  2. Step 2: Convert to fraction form
    20,526.78/28,321.74 = 12,566.10/x
  3. Step 3: Cross multiply
    20,526.78x = 28,321.74 × 12,566.10
  4. Step 4: Simplify right side
    20,526.78x = 355,893,817.01
  5. Step 5: Solve for x
    x = 355,893,817.01/20,526.78
  6. Step 6: Final answer
    x = 17,338.02

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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.