Home / 18,512.60-25,547.32-10,129.08

Finding the Fourth Proportional to 18,512.60, 25,547.32 and 10,129.08

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Solution

The fourth proportional to 18,512.60, 25,547.32 and 10,129.08 is: 13,978.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,512.60 : 25,547.32 = 10,129.08 : x
  2. Step 2: Convert to fraction form
    18,512.60/25,547.32 = 10,129.08/x
  3. Step 3: Cross multiply
    18,512.60x = 25,547.32 × 10,129.08
  4. Step 4: Simplify right side
    18,512.60x = 258,770,848.07
  5. Step 5: Solve for x
    x = 258,770,848.07/18,512.60
  6. Step 6: Final answer
    x = 13,978.09

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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.