Home / 15,513.40-21,409.32-8,801.19

Finding the Fourth Proportional to 15,513.40, 21,409.32 and 8,801.19

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Solution

The fourth proportional to 15,513.40, 21,409.32 and 8,801.19 is: 12,146.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,513.40 : 21,409.32 = 8,801.19 : x
  2. Step 2: Convert to fraction form
    15,513.40/21,409.32 = 8,801.19/x
  3. Step 3: Cross multiply
    15,513.40x = 21,409.32 × 8,801.19
  4. Step 4: Simplify right side
    15,513.40x = 188,427,445.81
  5. Step 5: Solve for x
    x = 188,427,445.81/15,513.40
  6. Step 6: Final answer
    x = 12,146.11

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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.