Home / 31,721.21-47,566.62-10,655.40

Finding the Fourth Proportional to 31,721.21, 47,566.62 and 10,655.40

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Solution

The fourth proportional to 31,721.21, 47,566.62 and 10,655.40 is: 15,978.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.21 : 47,566.62 = 10,655.40 : x
  2. Step 2: Convert to fraction form
    31,721.21/47,566.62 = 10,655.40/x
  3. Step 3: Cross multiply
    31,721.21x = 47,566.62 × 10,655.40
  4. Step 4: Simplify right side
    31,721.21x = 506,841,362.75
  5. Step 5: Solve for x
    x = 506,841,362.75/31,721.21
  6. Step 6: Final answer
    x = 15,978.00

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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.