Home / 28,377.56-39,161.05-15,802.31

Finding the Fourth Proportional to 28,377.56, 39,161.05 and 15,802.31

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Solution

The fourth proportional to 28,377.56, 39,161.05 and 15,802.31 is: 21,807.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,377.56 : 39,161.05 = 15,802.31 : x
  2. Step 2: Convert to fraction form
    28,377.56/39,161.05 = 15,802.31/x
  3. Step 3: Cross multiply
    28,377.56x = 39,161.05 × 15,802.31
  4. Step 4: Simplify right side
    28,377.56x = 618,835,110.42
  5. Step 5: Solve for x
    x = 618,835,110.42/28,377.56
  6. Step 6: Final answer
    x = 21,807.20

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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.