Home / 31,421.16-47,139.68-9,235.24

Finding the Fourth Proportional to 31,421.16, 47,139.68 and 9,235.24

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Solution

The fourth proportional to 31,421.16, 47,139.68 and 9,235.24 is: 13,855.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.16 : 47,139.68 = 9,235.24 : x
  2. Step 2: Convert to fraction form
    31,421.16/47,139.68 = 9,235.24/x
  3. Step 3: Cross multiply
    31,421.16x = 47,139.68 × 9,235.24
  4. Step 4: Simplify right side
    31,421.16x = 435,346,258.32
  5. Step 5: Solve for x
    x = 435,346,258.32/31,421.16
  6. Step 6: Final answer
    x = 13,855.19

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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.