Home / 28,620.84-42,901.95-11,990.53

Finding the Fourth Proportional to 28,620.84, 42,901.95 and 11,990.53

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Solution

The fourth proportional to 28,620.84, 42,901.95 and 11,990.53 is: 17,973.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.84 : 42,901.95 = 11,990.53 : x
  2. Step 2: Convert to fraction form
    28,620.84/42,901.95 = 11,990.53/x
  3. Step 3: Cross multiply
    28,620.84x = 42,901.95 × 11,990.53
  4. Step 4: Simplify right side
    28,620.84x = 514,417,217.13
  5. Step 5: Solve for x
    x = 514,417,217.13/28,620.84
  6. Step 6: Final answer
    x = 17,973.52

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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.