Home / 12,986.02-19,480.11-5,590.66

Finding the Fourth Proportional to 12,986.02, 19,480.11 and 5,590.66

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Solution

The fourth proportional to 12,986.02, 19,480.11 and 5,590.66 is: 8,386.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,986.02 : 19,480.11 = 5,590.66 : x
  2. Step 2: Convert to fraction form
    12,986.02/19,480.11 = 5,590.66/x
  3. Step 3: Cross multiply
    12,986.02x = 19,480.11 × 5,590.66
  4. Step 4: Simplify right side
    12,986.02x = 108,906,671.77
  5. Step 5: Solve for x
    x = 108,906,671.77/12,986.02
  6. Step 6: Final answer
    x = 8,386.45

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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.