Home / 10,985.64-16,478.40-2,665.65

Finding the Fourth Proportional to 10,985.64, 16,478.40 and 2,665.65

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Solution

The fourth proportional to 10,985.64, 16,478.40 and 2,665.65 is: 3,998.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,985.64 : 16,478.40 = 2,665.65 : x
  2. Step 2: Convert to fraction form
    10,985.64/16,478.40 = 2,665.65/x
  3. Step 3: Cross multiply
    10,985.64x = 16,478.40 × 2,665.65
  4. Step 4: Simplify right side
    10,985.64x = 43,925,646.96
  5. Step 5: Solve for x
    x = 43,925,646.96/10,985.64
  6. Step 6: Final answer
    x = 3,998.46

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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.