Home / 15,516.16-21,417.14-8,806.26

Finding the Fourth Proportional to 15,516.16, 21,417.14 and 8,806.26

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Solution

The fourth proportional to 15,516.16, 21,417.14 and 8,806.26 is: 12,155.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,516.16 : 21,417.14 = 8,806.26 : x
  2. Step 2: Convert to fraction form
    15,516.16/21,417.14 = 8,806.26/x
  3. Step 3: Cross multiply
    15,516.16x = 21,417.14 × 8,806.26
  4. Step 4: Simplify right side
    15,516.16x = 188,604,903.30
  5. Step 5: Solve for x
    x = 188,604,903.30/15,516.16
  6. Step 6: Final answer
    x = 12,155.39

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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.