Home / 31,970.12-47,971.40-21,560

Finding the Fourth Proportional to 31,970.12, 47,971.40 and 21,560

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Solution

The fourth proportional to 31,970.12, 47,971.40 and 21,560 is: 32,350.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,970.12 : 47,971.40 = 21,560 : x
  2. Step 2: Convert to fraction form
    31,970.12/47,971.40 = 21,560/x
  3. Step 3: Cross multiply
    31,970.12x = 47,971.40 × 21,560
  4. Step 4: Simplify right side
    31,970.12x = 1,034,263,384
  5. Step 5: Solve for x
    x = 1,034,263,384/31,970.12
  6. Step 6: Final answer
    x = 32,350.94

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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.