Home / 31,564.81-47,374.80-12,855.07

Finding the Fourth Proportional to 31,564.81, 47,374.80 and 12,855.07

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Solution

The fourth proportional to 31,564.81, 47,374.80 and 12,855.07 is: 19,293.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,564.81 : 47,374.80 = 12,855.07 : x
  2. Step 2: Convert to fraction form
    31,564.81/47,374.80 = 12,855.07/x
  3. Step 3: Cross multiply
    31,564.81x = 47,374.80 × 12,855.07
  4. Step 4: Simplify right side
    31,564.81x = 609,006,370.24
  5. Step 5: Solve for x
    x = 609,006,370.24/31,564.81
  6. Step 6: Final answer
    x = 19,293.84

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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.