Home / 13,529.08-20,270.40-12,159.51

Finding the Fourth Proportional to 13,529.08, 20,270.40 and 12,159.51

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Solution

The fourth proportional to 13,529.08, 20,270.40 and 12,159.51 is: 18,218.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,529.08 : 20,270.40 = 12,159.51 : x
  2. Step 2: Convert to fraction form
    13,529.08/20,270.40 = 12,159.51/x
  3. Step 3: Cross multiply
    13,529.08x = 20,270.40 × 12,159.51
  4. Step 4: Simplify right side
    13,529.08x = 246,478,131.50
  5. Step 5: Solve for x
    x = 246,478,131.50/13,529.08
  6. Step 6: Final answer
    x = 18,218.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.