Home / 20,457.34-28,232.15-11,507.66

Finding the Fourth Proportional to 20,457.34, 28,232.15 and 11,507.66

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Solution

The fourth proportional to 20,457.34, 28,232.15 and 11,507.66 is: 15,881.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.34 : 28,232.15 = 11,507.66 : x
  2. Step 2: Convert to fraction form
    20,457.34/28,232.15 = 11,507.66/x
  3. Step 3: Cross multiply
    20,457.34x = 28,232.15 × 11,507.66
  4. Step 4: Simplify right side
    20,457.34x = 324,885,983.27
  5. Step 5: Solve for x
    x = 324,885,983.27/20,457.34
  6. Step 6: Final answer
    x = 15,881.15

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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.