Home / 28,319.80-42,479.72-9,600

Finding the Fourth Proportional to 28,319.80, 42,479.72 and 9,600

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Solution

The fourth proportional to 28,319.80, 42,479.72 and 9,600 is: 14,400.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.80 : 42,479.72 = 9,600 : x
  2. Step 2: Convert to fraction form
    28,319.80/42,479.72 = 9,600/x
  3. Step 3: Cross multiply
    28,319.80x = 42,479.72 × 9,600
  4. Step 4: Simplify right side
    28,319.80x = 407,805,312
  5. Step 5: Solve for x
    x = 407,805,312/28,319.80
  6. Step 6: Final answer
    x = 14,400.01

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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.