Home / 10,429.20-15,643.80-9,281.03

Finding the Fourth Proportional to 10,429.20, 15,643.80 and 9,281.03

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Solution

The fourth proportional to 10,429.20, 15,643.80 and 9,281.03 is: 13,921.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,429.20 : 15,643.80 = 9,281.03 : x
  2. Step 2: Convert to fraction form
    10,429.20/15,643.80 = 9,281.03/x
  3. Step 3: Cross multiply
    10,429.20x = 15,643.80 × 9,281.03
  4. Step 4: Simplify right side
    10,429.20x = 145,190,498.90
  5. Step 5: Solve for x
    x = 145,190,498.90/10,429.20
  6. Step 6: Final answer
    x = 13,921.54

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1.5x scale

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.