Home / 28,476.92-39,297.99-15,730.98

Finding the Fourth Proportional to 28,476.92, 39,297.99 and 15,730.98

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Solution

The fourth proportional to 28,476.92, 39,297.99 and 15,730.98 is: 21,708.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,476.92 : 39,297.99 = 15,730.98 : x
  2. Step 2: Convert to fraction form
    28,476.92/39,297.99 = 15,730.98/x
  3. Step 3: Cross multiply
    28,476.92x = 39,297.99 × 15,730.98
  4. Step 4: Simplify right side
    28,476.92x = 618,195,835.81
  5. Step 5: Solve for x
    x = 618,195,835.81/28,476.92
  6. Step 6: Final answer
    x = 21,708.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.