Home / 22,579.86-31,157.44-12,507.76

Finding the Fourth Proportional to 22,579.86, 31,157.44 and 12,507.76

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Solution

The fourth proportional to 22,579.86, 31,157.44 and 12,507.76 is: 17,259.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,579.86 : 31,157.44 = 12,507.76 : x
  2. Step 2: Convert to fraction form
    22,579.86/31,157.44 = 12,507.76/x
  3. Step 3: Cross multiply
    22,579.86x = 31,157.44 × 12,507.76
  4. Step 4: Simplify right side
    22,579.86x = 389,709,672.57
  5. Step 5: Solve for x
    x = 389,709,672.57/22,579.86
  6. Step 6: Final answer
    x = 17,259.17

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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.