Home / 25,640.02-38,459.80-8,109.86

Finding the Fourth Proportional to 25,640.02, 38,459.80 and 8,109.86

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Solution

The fourth proportional to 25,640.02, 38,459.80 and 8,109.86 is: 12,164.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,640.02 : 38,459.80 = 8,109.86 : x
  2. Step 2: Convert to fraction form
    25,640.02/38,459.80 = 8,109.86/x
  3. Step 3: Cross multiply
    25,640.02x = 38,459.80 × 8,109.86
  4. Step 4: Simplify right side
    25,640.02x = 311,903,593.63
  5. Step 5: Solve for x
    x = 311,903,593.63/25,640.02
  6. Step 6: Final answer
    x = 12,164.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.