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Finding the Fourth Proportional to 15,528.71, 23,297.93 and 9,988.31

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Solution

The fourth proportional to 15,528.71, 23,297.93 and 9,988.31 is: 14,985.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.71 : 23,297.93 = 9,988.31 : x
  2. Step 2: Convert to fraction form
    15,528.71/23,297.93 = 9,988.31/x
  3. Step 3: Cross multiply
    15,528.71x = 23,297.93 × 9,988.31
  4. Step 4: Simplify right side
    15,528.71x = 232,706,992.96
  5. Step 5: Solve for x
    x = 232,706,992.96/15,528.71
  6. Step 6: Final answer
    x = 14,985.59

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