Home / 21,066.12-31,599.24-6,280.32

Finding the Fourth Proportional to 21,066.12, 31,599.24 and 6,280.32

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Solution

The fourth proportional to 21,066.12, 31,599.24 and 6,280.32 is: 9,420.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,066.12 : 31,599.24 = 6,280.32 : x
  2. Step 2: Convert to fraction form
    21,066.12/31,599.24 = 6,280.32/x
  3. Step 3: Cross multiply
    21,066.12x = 31,599.24 × 6,280.32
  4. Step 4: Simplify right side
    21,066.12x = 198,453,338.96
  5. Step 5: Solve for x
    x = 198,453,338.96/21,066.12
  6. Step 6: Final answer
    x = 9,420.50

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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.