Home / 20,985.16-31,482.60-6,944.64

Finding the Fourth Proportional to 20,985.16, 31,482.60 and 6,944.64

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Solution

The fourth proportional to 20,985.16, 31,482.60 and 6,944.64 is: 10,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,985.16 : 31,482.60 = 6,944.64 : x
  2. Step 2: Convert to fraction form
    20,985.16/31,482.60 = 6,944.64/x
  3. Step 3: Cross multiply
    20,985.16x = 31,482.60 × 6,944.64
  4. Step 4: Simplify right side
    20,985.16x = 218,635,323.26
  5. Step 5: Solve for x
    x = 218,635,323.26/20,985.16
  6. Step 6: Final answer
    x = 10,418.57

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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.