Home / 13,990.02-19,240.07-11,123.69

Finding the Fourth Proportional to 13,990.02, 19,240.07 and 11,123.69

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Solution

The fourth proportional to 13,990.02, 19,240.07 and 11,123.69 is: 15,298.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.02 : 19,240.07 = 11,123.69 : x
  2. Step 2: Convert to fraction form
    13,990.02/19,240.07 = 11,123.69/x
  3. Step 3: Cross multiply
    13,990.02x = 19,240.07 × 11,123.69
  4. Step 4: Simplify right side
    13,990.02x = 214,020,422.44
  5. Step 5: Solve for x
    x = 214,020,422.44/13,990.02
  6. Step 6: Final answer
    x = 15,298.08

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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.