Home / 42,721.97-58,938.23-28,579.37

Finding the Fourth Proportional to 42,721.97, 58,938.23 and 28,579.37

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Solution

The fourth proportional to 42,721.97, 58,938.23 and 28,579.37 is: 39,427.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,721.97 : 58,938.23 = 28,579.37 : x
  2. Step 2: Convert to fraction form
    42,721.97/58,938.23 = 28,579.37/x
  3. Step 3: Cross multiply
    42,721.97x = 58,938.23 × 28,579.37
  4. Step 4: Simplify right side
    42,721.97x = 1,684,417,259.07
  5. Step 5: Solve for x
    x = 1,684,417,259.07/42,721.97
  6. Step 6: Final answer
    x = 39,427.43

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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.