Home / 21,547.93-29,736.74-11,988.12

Finding the Fourth Proportional to 21,547.93, 29,736.74 and 11,988.12

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Solution

The fourth proportional to 21,547.93, 29,736.74 and 11,988.12 is: 16,543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.93 : 29,736.74 = 11,988.12 : x
  2. Step 2: Convert to fraction form
    21,547.93/29,736.74 = 11,988.12/x
  3. Step 3: Cross multiply
    21,547.93x = 29,736.74 × 11,988.12
  4. Step 4: Simplify right side
    21,547.93x = 356,487,458.85
  5. Step 5: Solve for x
    x = 356,487,458.85/21,547.93
  6. Step 6: Final answer
    x = 16,543.93

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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.