Home / 31,557.15-47,335.50-7,864.53

Finding the Fourth Proportional to 31,557.15, 47,335.50 and 7,864.53

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Solution

The fourth proportional to 31,557.15, 47,335.50 and 7,864.53 is: 11,796.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,557.15 : 47,335.50 = 7,864.53 : x
  2. Step 2: Convert to fraction form
    31,557.15/47,335.50 = 7,864.53/x
  3. Step 3: Cross multiply
    31,557.15x = 47,335.50 × 7,864.53
  4. Step 4: Simplify right side
    31,557.15x = 372,271,459.82
  5. Step 5: Solve for x
    x = 372,271,459.82/31,557.15
  6. Step 6: Final answer
    x = 11,796.74

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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.