Home / 21,989.55-32,989.45-7,197.57

Finding the Fourth Proportional to 21,989.55, 32,989.45 and 7,197.57

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Solution

The fourth proportional to 21,989.55, 32,989.45 and 7,197.57 is: 10,798.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.55 : 32,989.45 = 7,197.57 : x
  2. Step 2: Convert to fraction form
    21,989.55/32,989.45 = 7,197.57/x
  3. Step 3: Cross multiply
    21,989.55x = 32,989.45 × 7,197.57
  4. Step 4: Simplify right side
    21,989.55x = 237,443,875.64
  5. Step 5: Solve for x
    x = 237,443,875.64/21,989.55
  6. Step 6: Final answer
    x = 10,798.03

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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.