Home / 15,295.56-21,107.16-9,006.72

Finding the Fourth Proportional to 15,295.56, 21,107.16 and 9,006.72

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Solution

The fourth proportional to 15,295.56, 21,107.16 and 9,006.72 is: 12,428.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,295.56 : 21,107.16 = 9,006.72 : x
  2. Step 2: Convert to fraction form
    15,295.56/21,107.16 = 9,006.72/x
  3. Step 3: Cross multiply
    15,295.56x = 21,107.16 × 9,006.72
  4. Step 4: Simplify right side
    15,295.56x = 190,106,280.12
  5. Step 5: Solve for x
    x = 190,106,280.12/15,295.56
  6. Step 6: Final answer
    x = 12,428.85

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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.