Home / 20,397.02-30,595.08-8,386.64

Finding the Fourth Proportional to 20,397.02, 30,595.08 and 8,386.64

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Solution

The fourth proportional to 20,397.02, 30,595.08 and 8,386.64 is: 12,579.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,397.02 : 30,595.08 = 8,386.64 : x
  2. Step 2: Convert to fraction form
    20,397.02/30,595.08 = 8,386.64/x
  3. Step 3: Cross multiply
    20,397.02x = 30,595.08 × 8,386.64
  4. Step 4: Simplify right side
    20,397.02x = 256,589,921.73
  5. Step 5: Solve for x
    x = 256,589,921.73/20,397.02
  6. Step 6: Final answer
    x = 12,579.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.