Home / 15,533.28-21,435.72-8,459.72

Finding the Fourth Proportional to 15,533.28, 21,435.72 and 8,459.72

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Solution

The fourth proportional to 15,533.28, 21,435.72 and 8,459.72 is: 11,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.28 : 21,435.72 = 8,459.72 : x
  2. Step 2: Convert to fraction form
    15,533.28/21,435.72 = 8,459.72/x
  3. Step 3: Cross multiply
    15,533.28x = 21,435.72 × 8,459.72
  4. Step 4: Simplify right side
    15,533.28x = 181,340,189.20
  5. Step 5: Solve for x
    x = 181,340,189.20/15,533.28
  6. Step 6: Final answer
    x = 11,674.30

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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.