Home / 22,811.64-31,487.58-13,380

Finding the Fourth Proportional to 22,811.64, 31,487.58 and 13,380

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Solution

The fourth proportional to 22,811.64, 31,487.58 and 13,380 is: 18,468.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,811.64 : 31,487.58 = 13,380 : x
  2. Step 2: Convert to fraction form
    22,811.64/31,487.58 = 13,380/x
  3. Step 3: Cross multiply
    22,811.64x = 31,487.58 × 13,380
  4. Step 4: Simplify right side
    22,811.64x = 421,303,820.40
  5. Step 5: Solve for x
    x = 421,303,820.40/22,811.64
  6. Step 6: Final answer
    x = 18,468.81

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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.