Home / 15,605.67-21,533.68-8,890.00

Finding the Fourth Proportional to 15,605.67, 21,533.68 and 8,890.00

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Solution

The fourth proportional to 15,605.67, 21,533.68 and 8,890.00 is: 12,266.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,605.67 : 21,533.68 = 8,890.00 : x
  2. Step 2: Convert to fraction form
    15,605.67/21,533.68 = 8,890.00/x
  3. Step 3: Cross multiply
    15,605.67x = 21,533.68 × 8,890.00
  4. Step 4: Simplify right side
    15,605.67x = 191,434,372.48
  5. Step 5: Solve for x
    x = 191,434,372.48/15,605.67
  6. Step 6: Final answer
    x = 12,266.97

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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.