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Finding the Fourth Proportional to 21,547.51, 32,310.99 and 7,505.81

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Solution

The fourth proportional to 21,547.51, 32,310.99 and 7,505.81 is: 11,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.51 : 32,310.99 = 7,505.81 : x
  2. Step 2: Convert to fraction form
    21,547.51/32,310.99 = 7,505.81/x
  3. Step 3: Cross multiply
    21,547.51x = 32,310.99 × 7,505.81
  4. Step 4: Simplify right side
    21,547.51x = 242,520,151.85
  5. Step 5: Solve for x
    x = 242,520,151.85/21,547.51
  6. Step 6: Final answer
    x = 11,255.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.