Home / 31,322.64-46,979.40-9,130.05

Finding the Fourth Proportional to 31,322.64, 46,979.40 and 9,130.05

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Solution

The fourth proportional to 31,322.64, 46,979.40 and 9,130.05 is: 13,693.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,322.64 : 46,979.40 = 9,130.05 : x
  2. Step 2: Convert to fraction form
    31,322.64/46,979.40 = 9,130.05/x
  3. Step 3: Cross multiply
    31,322.64x = 46,979.40 × 9,130.05
  4. Step 4: Simplify right side
    31,322.64x = 428,924,270.97
  5. Step 5: Solve for x
    x = 428,924,270.97/31,322.64
  6. Step 6: Final answer
    x = 13,693.75

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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.