Home / 31,582.02-47,355.60-12,857.26

Finding the Fourth Proportional to 31,582.02, 47,355.60 and 12,857.26

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Solution

The fourth proportional to 31,582.02, 47,355.60 and 12,857.26 is: 19,278.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,582.02 : 47,355.60 = 12,857.26 : x
  2. Step 2: Convert to fraction form
    31,582.02/47,355.60 = 12,857.26/x
  3. Step 3: Cross multiply
    31,582.02x = 47,355.60 × 12,857.26
  4. Step 4: Simplify right side
    31,582.02x = 608,863,261.66
  5. Step 5: Solve for x
    x = 608,863,261.66/31,582.02
  6. Step 6: Final answer
    x = 19,278.79

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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.