Home / 15,379.60-21,223.37-8,664.70

Finding the Fourth Proportional to 15,379.60, 21,223.37 and 8,664.70

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Solution

The fourth proportional to 15,379.60, 21,223.37 and 8,664.70 is: 11,957.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.60 : 21,223.37 = 8,664.70 : x
  2. Step 2: Convert to fraction form
    15,379.60/21,223.37 = 8,664.70/x
  3. Step 3: Cross multiply
    15,379.60x = 21,223.37 × 8,664.70
  4. Step 4: Simplify right side
    15,379.60x = 183,893,984.60
  5. Step 5: Solve for x
    x = 183,893,984.60/15,379.60
  6. Step 6: Final answer
    x = 11,957.01

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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.