Home / 20,528.64-28,316.18-12,567.96

Finding the Fourth Proportional to 20,528.64, 28,316.18 and 12,567.96

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Solution

The fourth proportional to 20,528.64, 28,316.18 and 12,567.96 is: 17,335.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.64 : 28,316.18 = 12,567.96 : x
  2. Step 2: Convert to fraction form
    20,528.64/28,316.18 = 12,567.96/x
  3. Step 3: Cross multiply
    20,528.64x = 28,316.18 × 12,567.96
  4. Step 4: Simplify right side
    20,528.64x = 355,876,649.01
  5. Step 5: Solve for x
    x = 355,876,649.01/20,528.64
  6. Step 6: Final answer
    x = 17,335.62

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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.