Home / 31,848.53-47,773.27-12,128.18

Finding the Fourth Proportional to 31,848.53, 47,773.27 and 12,128.18

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Solution

The fourth proportional to 31,848.53, 47,773.27 and 12,128.18 is: 18,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,848.53 : 47,773.27 = 12,128.18 : x
  2. Step 2: Convert to fraction form
    31,848.53/47,773.27 = 12,128.18/x
  3. Step 3: Cross multiply
    31,848.53x = 47,773.27 × 12,128.18
  4. Step 4: Simplify right side
    31,848.53x = 579,402,817.75
  5. Step 5: Solve for x
    x = 579,402,817.75/31,848.53
  6. Step 6: Final answer
    x = 18,192.45

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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.