Home / 31,590.36-47,357.64-12,886.02

Finding the Fourth Proportional to 31,590.36, 47,357.64 and 12,886.02

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Solution

The fourth proportional to 31,590.36, 47,357.64 and 12,886.02 is: 19,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590.36 : 47,357.64 = 12,886.02 : x
  2. Step 2: Convert to fraction form
    31,590.36/47,357.64 = 12,886.02/x
  3. Step 3: Cross multiply
    31,590.36x = 47,357.64 × 12,886.02
  4. Step 4: Simplify right side
    31,590.36x = 610,251,496.19
  5. Step 5: Solve for x
    x = 610,251,496.19/31,590.36
  6. Step 6: Final answer
    x = 19,317.65

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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.