Home / 21,030.18-31,550.94-6,992.48

Finding the Fourth Proportional to 21,030.18, 31,550.94 and 6,992.48

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Solution

The fourth proportional to 21,030.18, 31,550.94 and 6,992.48 is: 10,490.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.18 : 31,550.94 = 6,992.48 : x
  2. Step 2: Convert to fraction form
    21,030.18/31,550.94 = 6,992.48/x
  3. Step 3: Cross multiply
    21,030.18x = 31,550.94 × 6,992.48
  4. Step 4: Simplify right side
    21,030.18x = 220,619,159.18
  5. Step 5: Solve for x
    x = 220,619,159.18/21,030.18
  6. Step 6: Final answer
    x = 10,490.60

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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.