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Finding the Fourth Proportional to 25,316.65, 34,939.02 and 13,987.14

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Solution

The fourth proportional to 25,316.65, 34,939.02 and 13,987.14 is: 19,303.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,316.65 : 34,939.02 = 13,987.14 : x
  2. Step 2: Convert to fraction form
    25,316.65/34,939.02 = 13,987.14/x
  3. Step 3: Cross multiply
    25,316.65x = 34,939.02 × 13,987.14
  4. Step 4: Simplify right side
    25,316.65x = 488,696,789.51
  5. Step 5: Solve for x
    x = 488,696,789.51/25,316.65
  6. Step 6: Final answer
    x = 19,303.38

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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.