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Finding the Fourth Proportional to 30,592, 42,152.32 and 28,488.32

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Solution

The fourth proportional to 30,592, 42,152.32 and 28,488.32 is: 39,253.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,592 : 42,152.32 = 28,488.32 : x
  2. Step 2: Convert to fraction form
    30,592/42,152.32 = 28,488.32/x
  3. Step 3: Cross multiply
    30,592x = 42,152.32 × 28,488.32
  4. Step 4: Simplify right side
    30,592x = 1,200,848,780.90
  5. Step 5: Solve for x
    x = 1,200,848,780.90/30,592
  6. Step 6: Final answer
    x = 39,253.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.