Home / 21,073.58-31,626.70-7,937.90

Finding the Fourth Proportional to 21,073.58, 31,626.70 and 7,937.90

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Solution

The fourth proportional to 21,073.58, 31,626.70 and 7,937.90 is: 11,913.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,073.58 : 31,626.70 = 7,937.90 : x
  2. Step 2: Convert to fraction form
    21,073.58/31,626.70 = 7,937.90/x
  3. Step 3: Cross multiply
    21,073.58x = 31,626.70 × 7,937.90
  4. Step 4: Simplify right side
    21,073.58x = 251,049,581.93
  5. Step 5: Solve for x
    x = 251,049,581.93/21,073.58
  6. Step 6: Final answer
    x = 11,913.00

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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.