Home / 15,158.02-20,918.09-8,785.85

Finding the Fourth Proportional to 15,158.02, 20,918.09 and 8,785.85

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Solution

The fourth proportional to 15,158.02, 20,918.09 and 8,785.85 is: 12,124.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.02 : 20,918.09 = 8,785.85 : x
  2. Step 2: Convert to fraction form
    15,158.02/20,918.09 = 8,785.85/x
  3. Step 3: Cross multiply
    15,158.02x = 20,918.09 × 8,785.85
  4. Step 4: Simplify right side
    15,158.02x = 183,783,052.51
  5. Step 5: Solve for x
    x = 183,783,052.51/15,158.02
  6. Step 6: Final answer
    x = 12,124.48

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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.