Home / 20,572.04-30,858.06-4,989.64

Finding the Fourth Proportional to 20,572.04, 30,858.06 and 4,989.64

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Solution

The fourth proportional to 20,572.04, 30,858.06 and 4,989.64 is: 7,484.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,572.04 : 30,858.06 = 4,989.64 : x
  2. Step 2: Convert to fraction form
    20,572.04/30,858.06 = 4,989.64/x
  3. Step 3: Cross multiply
    20,572.04x = 30,858.06 × 4,989.64
  4. Step 4: Simplify right side
    20,572.04x = 153,970,610.50
  5. Step 5: Solve for x
    x = 153,970,610.50/20,572.04
  6. Step 6: Final answer
    x = 7,484.46

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Double scale
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Similar ratio
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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.