Home / 30,056.18-45,091.66-21,188.84

Finding the Fourth Proportional to 30,056.18, 45,091.66 and 21,188.84

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Solution

The fourth proportional to 30,056.18, 45,091.66 and 21,188.84 is: 31,788.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,056.18 : 45,091.66 = 21,188.84 : x
  2. Step 2: Convert to fraction form
    30,056.18/45,091.66 = 21,188.84/x
  3. Step 3: Cross multiply
    30,056.18x = 45,091.66 × 21,188.84
  4. Step 4: Simplify right side
    30,056.18x = 955,439,969.07
  5. Step 5: Solve for x
    x = 955,439,969.07/30,056.18
  6. Step 6: Final answer
    x = 31,788.47

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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.