Home / 28,218.31-38,941.05-15,471.34

Finding the Fourth Proportional to 28,218.31, 38,941.05 and 15,471.34

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Solution

The fourth proportional to 28,218.31, 38,941.05 and 15,471.34 is: 21,350.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,218.31 : 38,941.05 = 15,471.34 : x
  2. Step 2: Convert to fraction form
    28,218.31/38,941.05 = 15,471.34/x
  3. Step 3: Cross multiply
    28,218.31x = 38,941.05 × 15,471.34
  4. Step 4: Simplify right side
    28,218.31x = 602,470,224.51
  5. Step 5: Solve for x
    x = 602,470,224.51/28,218.31
  6. Step 6: Final answer
    x = 21,350.33

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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.