Home / 31,428.58-47,130.52-11,433.32

Finding the Fourth Proportional to 31,428.58, 47,130.52 and 11,433.32

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Solution

The fourth proportional to 31,428.58, 47,130.52 and 11,433.32 is: 17,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,428.58 : 47,130.52 = 11,433.32 : x
  2. Step 2: Convert to fraction form
    31,428.58/47,130.52 = 11,433.32/x
  3. Step 3: Cross multiply
    31,428.58x = 47,130.52 × 11,433.32
  4. Step 4: Simplify right side
    31,428.58x = 538,858,316.93
  5. Step 5: Solve for x
    x = 538,858,316.93/31,428.58
  6. Step 6: Final answer
    x = 17,145.49

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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.