Home / 15,666.08-21,606.61-13,773.62

Finding the Fourth Proportional to 15,666.08, 21,606.61 and 13,773.62

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Solution

The fourth proportional to 15,666.08, 21,606.61 and 13,773.62 is: 18,996.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,666.08 : 21,606.61 = 13,773.62 : x
  2. Step 2: Convert to fraction form
    15,666.08/21,606.61 = 13,773.62/x
  3. Step 3: Cross multiply
    15,666.08x = 21,606.61 × 13,773.62
  4. Step 4: Simplify right side
    15,666.08x = 297,601,235.63
  5. Step 5: Solve for x
    x = 297,601,235.63/15,666.08
  6. Step 6: Final answer
    x = 18,996.53

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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.