Home / 15,289.25-21,090.62-9,621.88

Finding the Fourth Proportional to 15,289.25, 21,090.62 and 9,621.88

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Solution

The fourth proportional to 15,289.25, 21,090.62 and 9,621.88 is: 13,272.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.25 : 21,090.62 = 9,621.88 : x
  2. Step 2: Convert to fraction form
    15,289.25/21,090.62 = 9,621.88/x
  3. Step 3: Cross multiply
    15,289.25x = 21,090.62 × 9,621.88
  4. Step 4: Simplify right side
    15,289.25x = 202,931,390.71
  5. Step 5: Solve for x
    x = 202,931,390.71/15,289.25
  6. Step 6: Final answer
    x = 13,272.82

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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.