Home / 28,417.77-39,216.81-15,671.48

Finding the Fourth Proportional to 28,417.77, 39,216.81 and 15,671.48

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Solution

The fourth proportional to 28,417.77, 39,216.81 and 15,671.48 is: 21,626.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.77 : 39,216.81 = 15,671.48 : x
  2. Step 2: Convert to fraction form
    28,417.77/39,216.81 = 15,671.48/x
  3. Step 3: Cross multiply
    28,417.77x = 39,216.81 × 15,671.48
  4. Step 4: Simplify right side
    28,417.77x = 614,585,228.11
  5. Step 5: Solve for x
    x = 614,585,228.11/28,417.77
  6. Step 6: Final answer
    x = 21,626.79

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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.