Home / 11,359.28-15,678.60-6,646.64

Finding the Fourth Proportional to 11,359.28, 15,678.60 and 6,646.64

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Solution

The fourth proportional to 11,359.28, 15,678.60 and 6,646.64 is: 9,174.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,359.28 : 15,678.60 = 6,646.64 : x
  2. Step 2: Convert to fraction form
    11,359.28/15,678.60 = 6,646.64/x
  3. Step 3: Cross multiply
    11,359.28x = 15,678.60 × 6,646.64
  4. Step 4: Simplify right side
    11,359.28x = 104,210,009.90
  5. Step 5: Solve for x
    x = 104,210,009.90/11,359.28
  6. Step 6: Final answer
    x = 9,174.00

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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.