Home / 15,146.16-20,911.86-13,547.82

Finding the Fourth Proportional to 15,146.16, 20,911.86 and 13,547.82

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Solution

The fourth proportional to 15,146.16, 20,911.86 and 13,547.82 is: 18,705.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,146.16 : 20,911.86 = 13,547.82 : x
  2. Step 2: Convert to fraction form
    15,146.16/20,911.86 = 13,547.82/x
  3. Step 3: Cross multiply
    15,146.16x = 20,911.86 × 13,547.82
  4. Step 4: Simplify right side
    15,146.16x = 283,310,115.15
  5. Step 5: Solve for x
    x = 283,310,115.15/15,146.16
  6. Step 6: Final answer
    x = 18,705.08

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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.