Home / 28,035.20-38,688.64-15,459.84

Finding the Fourth Proportional to 28,035.20, 38,688.64 and 15,459.84

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Solution

The fourth proportional to 28,035.20, 38,688.64 and 15,459.84 is: 21,334.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,035.20 : 38,688.64 = 15,459.84 : x
  2. Step 2: Convert to fraction form
    28,035.20/38,688.64 = 15,459.84/x
  3. Step 3: Cross multiply
    28,035.20x = 38,688.64 × 15,459.84
  4. Step 4: Simplify right side
    28,035.20x = 598,120,184.22
  5. Step 5: Solve for x
    x = 598,120,184.22/28,035.20
  6. Step 6: Final answer
    x = 21,334.61

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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.