Home / 20,571.04-30,856.56-4,988.64

Finding the Fourth Proportional to 20,571.04, 30,856.56 and 4,988.64

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Solution

The fourth proportional to 20,571.04, 30,856.56 and 4,988.64 is: 7,482.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.04 : 30,856.56 = 4,988.64 : x
  2. Step 2: Convert to fraction form
    20,571.04/30,856.56 = 4,988.64/x
  3. Step 3: Cross multiply
    20,571.04x = 30,856.56 × 4,988.64
  4. Step 4: Simplify right side
    20,571.04x = 153,932,269.48
  5. Step 5: Solve for x
    x = 153,932,269.48/20,571.04
  6. Step 6: Final answer
    x = 7,482.96

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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.