Home / 13,995.64-19,315.02-8,690.68

Finding the Fourth Proportional to 13,995.64, 19,315.02 and 8,690.68

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Solution

The fourth proportional to 13,995.64, 19,315.02 and 8,690.68 is: 11,993.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.64 : 19,315.02 = 8,690.68 : x
  2. Step 2: Convert to fraction form
    13,995.64/19,315.02 = 8,690.68/x
  3. Step 3: Cross multiply
    13,995.64x = 19,315.02 × 8,690.68
  4. Step 4: Simplify right side
    13,995.64x = 167,860,658.01
  5. Step 5: Solve for x
    x = 167,860,658.01/13,995.64
  6. Step 6: Final answer
    x = 11,993.78

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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.