Home / 11,820.58-16,312.51-6,515.59

Finding the Fourth Proportional to 11,820.58, 16,312.51 and 6,515.59

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Solution

The fourth proportional to 11,820.58, 16,312.51 and 6,515.59 is: 8,991.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,820.58 : 16,312.51 = 6,515.59 : x
  2. Step 2: Convert to fraction form
    11,820.58/16,312.51 = 6,515.59/x
  3. Step 3: Cross multiply
    11,820.58x = 16,312.51 × 6,515.59
  4. Step 4: Simplify right side
    11,820.58x = 106,285,643.31
  5. Step 5: Solve for x
    x = 106,285,643.31/11,820.58
  6. Step 6: Final answer
    x = 8,991.57

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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.