Home / 31,988.07-47,980.08-12,493.25

Finding the Fourth Proportional to 31,988.07, 47,980.08 and 12,493.25

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Solution

The fourth proportional to 31,988.07, 47,980.08 and 12,493.25 is: 18,739.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.07 : 47,980.08 = 12,493.25 : x
  2. Step 2: Convert to fraction form
    31,988.07/47,980.08 = 12,493.25/x
  3. Step 3: Cross multiply
    31,988.07x = 47,980.08 × 12,493.25
  4. Step 4: Simplify right side
    31,988.07x = 599,426,894.56
  5. Step 5: Solve for x
    x = 599,426,894.56/31,988.07
  6. Step 6: Final answer
    x = 18,739.08

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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.