Home / 28,214.91-42,239.30-20,852.19

Finding the Fourth Proportional to 28,214.91, 42,239.30 and 20,852.19

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Solution

The fourth proportional to 28,214.91, 42,239.30 and 20,852.19 is: 31,216.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,214.91 : 42,239.30 = 20,852.19 : x
  2. Step 2: Convert to fraction form
    28,214.91/42,239.30 = 20,852.19/x
  3. Step 3: Cross multiply
    28,214.91x = 42,239.30 × 20,852.19
  4. Step 4: Simplify right side
    28,214.91x = 880,781,804.81
  5. Step 5: Solve for x
    x = 880,781,804.81/28,214.91
  6. Step 6: Final answer
    x = 31,216.89

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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.