Home / 15,585.36-21,508.32-8,871.60

Finding the Fourth Proportional to 15,585.36, 21,508.32 and 8,871.60

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Solution

The fourth proportional to 15,585.36, 21,508.32 and 8,871.60 is: 12,243.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,585.36 : 21,508.32 = 8,871.60 : x
  2. Step 2: Convert to fraction form
    15,585.36/21,508.32 = 8,871.60/x
  3. Step 3: Cross multiply
    15,585.36x = 21,508.32 × 8,871.60
  4. Step 4: Simplify right side
    15,585.36x = 190,813,211.71
  5. Step 5: Solve for x
    x = 190,813,211.71/15,585.36
  6. Step 6: Final answer
    x = 12,243.11

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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.