Home / 11,485.28-15,828.80-8,966.08

Finding the Fourth Proportional to 11,485.28, 15,828.80 and 8,966.08

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Solution

The fourth proportional to 11,485.28, 15,828.80 and 8,966.08 is: 12,356.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.28 : 15,828.80 = 8,966.08 : x
  2. Step 2: Convert to fraction form
    11,485.28/15,828.80 = 8,966.08/x
  3. Step 3: Cross multiply
    11,485.28x = 15,828.80 × 8,966.08
  4. Step 4: Simplify right side
    11,485.28x = 141,922,287.10
  5. Step 5: Solve for x
    x = 141,922,287.10/11,485.28
  6. Step 6: Final answer
    x = 12,356.89

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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.