Home / 31,442.60-47,156.54-11,721.64

Finding the Fourth Proportional to 31,442.60, 47,156.54 and 11,721.64

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Solution

The fourth proportional to 31,442.60, 47,156.54 and 11,721.64 is: 17,579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.60 : 47,156.54 = 11,721.64 : x
  2. Step 2: Convert to fraction form
    31,442.60/47,156.54 = 11,721.64/x
  3. Step 3: Cross multiply
    31,442.60x = 47,156.54 × 11,721.64
  4. Step 4: Simplify right side
    31,442.60x = 552,751,985.53
  5. Step 5: Solve for x
    x = 552,751,985.53/31,442.60
  6. Step 6: Final answer
    x = 17,579.72

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1.5x scale

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.