Home / 21,135.15-31,701.64-7,095.29

Finding the Fourth Proportional to 21,135.15, 31,701.64 and 7,095.29

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Solution

The fourth proportional to 21,135.15, 31,701.64 and 7,095.29 is: 10,642.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,135.15 : 31,701.64 = 7,095.29 : x
  2. Step 2: Convert to fraction form
    21,135.15/31,701.64 = 7,095.29/x
  3. Step 3: Cross multiply
    21,135.15x = 31,701.64 × 7,095.29
  4. Step 4: Simplify right side
    21,135.15x = 224,932,153.03
  5. Step 5: Solve for x
    x = 224,932,153.03/21,135.15
  6. Step 6: Final answer
    x = 10,642.56

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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.