Home / 20,931.44-31,397.06-7,604.40

Finding the Fourth Proportional to 20,931.44, 31,397.06 and 7,604.40

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Solution

The fourth proportional to 20,931.44, 31,397.06 and 7,604.40 is: 11,406.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,931.44 : 31,397.06 = 7,604.40 : x
  2. Step 2: Convert to fraction form
    20,931.44/31,397.06 = 7,604.40/x
  3. Step 3: Cross multiply
    20,931.44x = 31,397.06 × 7,604.40
  4. Step 4: Simplify right side
    20,931.44x = 238,755,803.06
  5. Step 5: Solve for x
    x = 238,755,803.06/20,931.44
  6. Step 6: Final answer
    x = 11,406.56

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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.