Home / 20,777.72-31,176.90-9,685.24

Finding the Fourth Proportional to 20,777.72, 31,176.90 and 9,685.24

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Solution

The fourth proportional to 20,777.72, 31,176.90 and 9,685.24 is: 14,532.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777.72 : 31,176.90 = 9,685.24 : x
  2. Step 2: Convert to fraction form
    20,777.72/31,176.90 = 9,685.24/x
  3. Step 3: Cross multiply
    20,777.72x = 31,176.90 × 9,685.24
  4. Step 4: Simplify right side
    20,777.72x = 301,955,681.01
  5. Step 5: Solve for x
    x = 301,955,681.01/20,777.72
  6. Step 6: Final answer
    x = 14,532.67

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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.