Home / 28,263.12-42,395.49-15,776.16

Finding the Fourth Proportional to 28,263.12, 42,395.49 and 15,776.16

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Solution

The fourth proportional to 28,263.12, 42,395.49 and 15,776.16 is: 23,664.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,263.12 : 42,395.49 = 15,776.16 : x
  2. Step 2: Convert to fraction form
    28,263.12/42,395.49 = 15,776.16/x
  3. Step 3: Cross multiply
    28,263.12x = 42,395.49 × 15,776.16
  4. Step 4: Simplify right side
    28,263.12x = 668,838,033.52
  5. Step 5: Solve for x
    x = 668,838,033.52/28,263.12
  6. Step 6: Final answer
    x = 23,664.69

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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.