Home / 20,897.71-31,311.25-10,353.67

Finding the Fourth Proportional to 20,897.71, 31,311.25 and 10,353.67

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Solution

The fourth proportional to 20,897.71, 31,311.25 and 10,353.67 is: 15,513.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,897.71 : 31,311.25 = 10,353.67 : x
  2. Step 2: Convert to fraction form
    20,897.71/31,311.25 = 10,353.67/x
  3. Step 3: Cross multiply
    20,897.71x = 31,311.25 × 10,353.67
  4. Step 4: Simplify right side
    20,897.71x = 324,186,349.79
  5. Step 5: Solve for x
    x = 324,186,349.79/20,897.71
  6. Step 6: Final answer
    x = 15,513.01

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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.