Home / 12,558.06-17,320.99-8,312.76

Finding the Fourth Proportional to 12,558.06, 17,320.99 and 8,312.76

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Solution

The fourth proportional to 12,558.06, 17,320.99 and 8,312.76 is: 11,465.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.06 : 17,320.99 = 8,312.76 : x
  2. Step 2: Convert to fraction form
    12,558.06/17,320.99 = 8,312.76/x
  3. Step 3: Cross multiply
    12,558.06x = 17,320.99 × 8,312.76
  4. Step 4: Simplify right side
    12,558.06x = 143,985,227.64
  5. Step 5: Solve for x
    x = 143,985,227.64/12,558.06
  6. Step 6: Final answer
    x = 11,465.56

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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.