Home / 28,703.52-39,611.32-15,783.34

Finding the Fourth Proportional to 28,703.52, 39,611.32 and 15,783.34

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Solution

The fourth proportional to 28,703.52, 39,611.32 and 15,783.34 is: 21,781.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,703.52 : 39,611.32 = 15,783.34 : x
  2. Step 2: Convert to fraction form
    28,703.52/39,611.32 = 15,783.34/x
  3. Step 3: Cross multiply
    28,703.52x = 39,611.32 × 15,783.34
  4. Step 4: Simplify right side
    28,703.52x = 625,198,931.41
  5. Step 5: Solve for x
    x = 625,198,931.41/28,703.52
  6. Step 6: Final answer
    x = 21,781.26

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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.