Home / 15,333.18-21,159.27-8,709.18

Finding the Fourth Proportional to 15,333.18, 21,159.27 and 8,709.18

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Solution

The fourth proportional to 15,333.18, 21,159.27 and 8,709.18 is: 12,018.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,333.18 : 21,159.27 = 8,709.18 : x
  2. Step 2: Convert to fraction form
    15,333.18/21,159.27 = 8,709.18/x
  3. Step 3: Cross multiply
    15,333.18x = 21,159.27 × 8,709.18
  4. Step 4: Simplify right side
    15,333.18x = 184,279,891.10
  5. Step 5: Solve for x
    x = 184,279,891.10/15,333.18
  6. Step 6: Final answer
    x = 12,018.37

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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.