Home / 28,684.13-39,573-21,148.34

Finding the Fourth Proportional to 28,684.13, 39,573 and 21,148.34

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Solution

The fourth proportional to 28,684.13, 39,573 and 21,148.34 is: 29,176.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,684.13 : 39,573 = 21,148.34 : x
  2. Step 2: Convert to fraction form
    28,684.13/39,573 = 21,148.34/x
  3. Step 3: Cross multiply
    28,684.13x = 39,573 × 21,148.34
  4. Step 4: Simplify right side
    28,684.13x = 836,903,060.96
  5. Step 5: Solve for x
    x = 836,903,060.96/28,684.13
  6. Step 6: Final answer
    x = 29,176.52

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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.