Home / 13,399.39-20,001.50-12,411.19

Finding the Fourth Proportional to 13,399.39, 20,001.50 and 12,411.19

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Solution

The fourth proportional to 13,399.39, 20,001.50 and 12,411.19 is: 18,526.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.39 : 20,001.50 = 12,411.19 : x
  2. Step 2: Convert to fraction form
    13,399.39/20,001.50 = 12,411.19/x
  3. Step 3: Cross multiply
    13,399.39x = 20,001.50 × 12,411.19
  4. Step 4: Simplify right side
    13,399.39x = 248,242,416.79
  5. Step 5: Solve for x
    x = 248,242,416.79/13,399.39
  6. Step 6: Final answer
    x = 18,526.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.