Home / 20,505.12-30,645.32-14,970.12

Finding the Fourth Proportional to 20,505.12, 30,645.32 and 14,970.12

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Solution

The fourth proportional to 20,505.12, 30,645.32 and 14,970.12 is: 22,373.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.12 : 30,645.32 = 14,970.12 : x
  2. Step 2: Convert to fraction form
    20,505.12/30,645.32 = 14,970.12/x
  3. Step 3: Cross multiply
    20,505.12x = 30,645.32 × 14,970.12
  4. Step 4: Simplify right side
    20,505.12x = 458,764,117.84
  5. Step 5: Solve for x
    x = 458,764,117.84/20,505.12
  6. Step 6: Final answer
    x = 22,373.15

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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.