Home / 20,730.51-31,074.32-9,628.13

Finding the Fourth Proportional to 20,730.51, 31,074.32 and 9,628.13

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Solution

The fourth proportional to 20,730.51, 31,074.32 and 9,628.13 is: 14,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.51 : 31,074.32 = 9,628.13 : x
  2. Step 2: Convert to fraction form
    20,730.51/31,074.32 = 9,628.13/x
  3. Step 3: Cross multiply
    20,730.51x = 31,074.32 × 9,628.13
  4. Step 4: Simplify right side
    20,730.51x = 299,187,694.38
  5. Step 5: Solve for x
    x = 299,187,694.38/20,730.51
  6. Step 6: Final answer
    x = 14,432.24

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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.