Home / 20,681.32-31,021.56-5,099.08

Finding the Fourth Proportional to 20,681.32, 31,021.56 and 5,099.08

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Solution

The fourth proportional to 20,681.32, 31,021.56 and 5,099.08 is: 7,648.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.32 : 31,021.56 = 5,099.08 : x
  2. Step 2: Convert to fraction form
    20,681.32/31,021.56 = 5,099.08/x
  3. Step 3: Cross multiply
    20,681.32x = 31,021.56 × 5,099.08
  4. Step 4: Simplify right side
    20,681.32x = 158,181,416.16
  5. Step 5: Solve for x
    x = 158,181,416.16/20,681.32
  6. Step 6: Final answer
    x = 7,648.52

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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.