Home / 13,327.02-19,990.50-12,515.07

Finding the Fourth Proportional to 13,327.02, 19,990.50 and 12,515.07

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Solution

The fourth proportional to 13,327.02, 19,990.50 and 12,515.07 is: 18,772.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,327.02 : 19,990.50 = 12,515.07 : x
  2. Step 2: Convert to fraction form
    13,327.02/19,990.50 = 12,515.07/x
  3. Step 3: Cross multiply
    13,327.02x = 19,990.50 × 12,515.07
  4. Step 4: Simplify right side
    13,327.02x = 250,182,506.84
  5. Step 5: Solve for x
    x = 250,182,506.84/13,327.02
  6. Step 6: Final answer
    x = 18,772.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.