Home / 20,759.40-31,119.66-10,225.35

Finding the Fourth Proportional to 20,759.40, 31,119.66 and 10,225.35

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Solution

The fourth proportional to 20,759.40, 31,119.66 and 10,225.35 is: 15,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759.40 : 31,119.66 = 10,225.35 : x
  2. Step 2: Convert to fraction form
    20,759.40/31,119.66 = 10,225.35/x
  3. Step 3: Cross multiply
    20,759.40x = 31,119.66 × 10,225.35
  4. Step 4: Simplify right side
    20,759.40x = 318,209,415.38
  5. Step 5: Solve for x
    x = 318,209,415.38/20,759.40
  6. Step 6: Final answer
    x = 15,328.45

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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.