Home / 15,957.09-22,019.90-8,785.60

Finding the Fourth Proportional to 15,957.09, 22,019.90 and 8,785.60

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Solution

The fourth proportional to 15,957.09, 22,019.90 and 8,785.60 is: 12,123.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,957.09 : 22,019.90 = 8,785.60 : x
  2. Step 2: Convert to fraction form
    15,957.09/22,019.90 = 8,785.60/x
  3. Step 3: Cross multiply
    15,957.09x = 22,019.90 × 8,785.60
  4. Step 4: Simplify right side
    15,957.09x = 193,457,934.46
  5. Step 5: Solve for x
    x = 193,457,934.46/15,957.09
  6. Step 6: Final answer
    x = 12,123.63

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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.