Home / 13,909.93-20,740.82-12,364.45

Finding the Fourth Proportional to 13,909.93, 20,740.82 and 12,364.45

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Solution

The fourth proportional to 13,909.93, 20,740.82 and 12,364.45 is: 18,436.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,909.93 : 20,740.82 = 12,364.45 : x
  2. Step 2: Convert to fraction form
    13,909.93/20,740.82 = 12,364.45/x
  3. Step 3: Cross multiply
    13,909.93x = 20,740.82 × 12,364.45
  4. Step 4: Simplify right side
    13,909.93x = 256,448,718.17
  5. Step 5: Solve for x
    x = 256,448,718.17/13,909.93
  6. Step 6: Final answer
    x = 18,436.38

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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.