Home / 15,269.49-21,072.11-8,555.00

Finding the Fourth Proportional to 15,269.49, 21,072.11 and 8,555.00

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Solution

The fourth proportional to 15,269.49, 21,072.11 and 8,555.00 is: 11,806.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,269.49 : 21,072.11 = 8,555.00 : x
  2. Step 2: Convert to fraction form
    15,269.49/21,072.11 = 8,555.00/x
  3. Step 3: Cross multiply
    15,269.49x = 21,072.11 × 8,555.00
  4. Step 4: Simplify right side
    15,269.49x = 180,271,752.91
  5. Step 5: Solve for x
    x = 180,271,752.91/15,269.49
  6. Step 6: Final answer
    x = 11,806.01

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Double scale
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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.