Home / 13,990.66-19,307.01-7,702.90

Finding the Fourth Proportional to 13,990.66, 19,307.01 and 7,702.90

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Solution

The fourth proportional to 13,990.66, 19,307.01 and 7,702.90 is: 10,629.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.66 : 19,307.01 = 7,702.90 : x
  2. Step 2: Convert to fraction form
    13,990.66/19,307.01 = 7,702.90/x
  3. Step 3: Cross multiply
    13,990.66x = 19,307.01 × 7,702.90
  4. Step 4: Simplify right side
    13,990.66x = 148,719,967.33
  5. Step 5: Solve for x
    x = 148,719,967.33/13,990.66
  6. Step 6: Final answer
    x = 10,629.95

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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.