Home / 28,160.40-38,877.53-21,029.63

Finding the Fourth Proportional to 28,160.40, 38,877.53 and 21,029.63

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Solution

The fourth proportional to 28,160.40, 38,877.53 and 21,029.63 is: 29,032.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.40 : 38,877.53 = 21,029.63 : x
  2. Step 2: Convert to fraction form
    28,160.40/38,877.53 = 21,029.63/x
  3. Step 3: Cross multiply
    28,160.40x = 38,877.53 × 21,029.63
  4. Step 4: Simplify right side
    28,160.40x = 817,580,063.26
  5. Step 5: Solve for x
    x = 817,580,063.26/28,160.40
  6. Step 6: Final answer
    x = 29,032.97

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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.