Home / 15,696.28-21,661.02-8,622.86

Finding the Fourth Proportional to 15,696.28, 21,661.02 and 8,622.86

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Solution

The fourth proportional to 15,696.28, 21,661.02 and 8,622.86 is: 11,899.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,696.28 : 21,661.02 = 8,622.86 : x
  2. Step 2: Convert to fraction form
    15,696.28/21,661.02 = 8,622.86/x
  3. Step 3: Cross multiply
    15,696.28x = 21,661.02 × 8,622.86
  4. Step 4: Simplify right side
    15,696.28x = 186,779,834.61
  5. Step 5: Solve for x
    x = 186,779,834.61/15,696.28
  6. Step 6: Final answer
    x = 11,899.62

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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.