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Finding the Fourth Proportional to 15,607.56, 21,537.09 and 8,802.12

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Solution

The fourth proportional to 15,607.56, 21,537.09 and 8,802.12 is: 12,146.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.56 : 21,537.09 = 8,802.12 : x
  2. Step 2: Convert to fraction form
    15,607.56/21,537.09 = 8,802.12/x
  3. Step 3: Cross multiply
    15,607.56x = 21,537.09 × 8,802.12
  4. Step 4: Simplify right side
    15,607.56x = 189,572,050.63
  5. Step 5: Solve for x
    x = 189,572,050.63/15,607.56
  6. Step 6: Final answer
    x = 12,146.17

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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.