Home / 28,356.97-39,130.77-15,607.72

Finding the Fourth Proportional to 28,356.97, 39,130.77 and 15,607.72

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Solution

The fourth proportional to 28,356.97, 39,130.77 and 15,607.72 is: 21,537.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,356.97 : 39,130.77 = 15,607.72 : x
  2. Step 2: Convert to fraction form
    28,356.97/39,130.77 = 15,607.72/x
  3. Step 3: Cross multiply
    28,356.97x = 39,130.77 × 15,607.72
  4. Step 4: Simplify right side
    28,356.97x = 610,742,101.54
  5. Step 5: Solve for x
    x = 610,742,101.54/28,356.97
  6. Step 6: Final answer
    x = 21,537.64

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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.