Home / 15,666.34-21,620.10-8,592.79

Finding the Fourth Proportional to 15,666.34, 21,620.10 and 8,592.79

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Solution

The fourth proportional to 15,666.34, 21,620.10 and 8,592.79 is: 11,858.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,666.34 : 21,620.10 = 8,592.79 : x
  2. Step 2: Convert to fraction form
    15,666.34/21,620.10 = 8,592.79/x
  3. Step 3: Cross multiply
    15,666.34x = 21,620.10 × 8,592.79
  4. Step 4: Simplify right side
    15,666.34x = 185,776,979.08
  5. Step 5: Solve for x
    x = 185,776,979.08/15,666.34
  6. Step 6: Final answer
    x = 11,858.35

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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.