Home / 28,220.48-42,311.04-12,417.92

Finding the Fourth Proportional to 28,220.48, 42,311.04 and 12,417.92

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Solution

The fourth proportional to 28,220.48, 42,311.04 and 12,417.92 is: 18,618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,220.48 : 42,311.04 = 12,417.92 : x
  2. Step 2: Convert to fraction form
    28,220.48/42,311.04 = 12,417.92/x
  3. Step 3: Cross multiply
    28,220.48x = 42,311.04 × 12,417.92
  4. Step 4: Simplify right side
    28,220.48x = 525,415,109.84
  5. Step 5: Solve for x
    x = 525,415,109.84/28,220.48
  6. Step 6: Final answer
    x = 18,618.22

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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.