Home / 10,533.12-15,788.70-4,290.42

Finding the Fourth Proportional to 10,533.12, 15,788.70 and 4,290.42

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Solution

The fourth proportional to 10,533.12, 15,788.70 and 4,290.42 is: 6,431.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,533.12 : 15,788.70 = 4,290.42 : x
  2. Step 2: Convert to fraction form
    10,533.12/15,788.70 = 4,290.42/x
  3. Step 3: Cross multiply
    10,533.12x = 15,788.70 × 4,290.42
  4. Step 4: Simplify right side
    10,533.12x = 67,740,154.25
  5. Step 5: Solve for x
    x = 67,740,154.25/10,533.12
  6. Step 6: Final answer
    x = 6,431.16

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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.