Home / 15,639.36-21,585.12-9,352.32

Finding the Fourth Proportional to 15,639.36, 21,585.12 and 9,352.32

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Solution

The fourth proportional to 15,639.36, 21,585.12 and 9,352.32 is: 12,907.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,639.36 : 21,585.12 = 9,352.32 : x
  2. Step 2: Convert to fraction form
    15,639.36/21,585.12 = 9,352.32/x
  3. Step 3: Cross multiply
    15,639.36x = 21,585.12 × 9,352.32
  4. Step 4: Simplify right side
    15,639.36x = 201,870,949.48
  5. Step 5: Solve for x
    x = 201,870,949.48/15,639.36
  6. Step 6: Final answer
    x = 12,907.88

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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.