Home / 13,888.79-19,146.57-9,902.99

Finding the Fourth Proportional to 13,888.79, 19,146.57 and 9,902.99

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Solution

The fourth proportional to 13,888.79, 19,146.57 and 9,902.99 is: 13,651.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.79 : 19,146.57 = 9,902.99 : x
  2. Step 2: Convert to fraction form
    13,888.79/19,146.57 = 9,902.99/x
  3. Step 3: Cross multiply
    13,888.79x = 19,146.57 × 9,902.99
  4. Step 4: Simplify right side
    13,888.79x = 189,608,291.24
  5. Step 5: Solve for x
    x = 189,608,291.24/13,888.79
  6. Step 6: Final answer
    x = 13,651.89

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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.