Home / 21,070.13-31,607.01-5,487.75

Finding the Fourth Proportional to 21,070.13, 31,607.01 and 5,487.75

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Solution

The fourth proportional to 21,070.13, 31,607.01 and 5,487.75 is: 8,232.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.13 : 31,607.01 = 5,487.75 : x
  2. Step 2: Convert to fraction form
    21,070.13/31,607.01 = 5,487.75/x
  3. Step 3: Cross multiply
    21,070.13x = 31,607.01 × 5,487.75
  4. Step 4: Simplify right side
    21,070.13x = 173,451,369.13
  5. Step 5: Solve for x
    x = 173,451,369.13/21,070.13
  6. Step 6: Final answer
    x = 8,232.10

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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.