Home / 31,129.88-46,681.04-8,938.10

Finding the Fourth Proportional to 31,129.88, 46,681.04 and 8,938.10

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Solution

The fourth proportional to 31,129.88, 46,681.04 and 8,938.10 is: 13,403.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,129.88 : 46,681.04 = 8,938.10 : x
  2. Step 2: Convert to fraction form
    31,129.88/46,681.04 = 8,938.10/x
  3. Step 3: Cross multiply
    31,129.88x = 46,681.04 × 8,938.10
  4. Step 4: Simplify right side
    31,129.88x = 417,239,803.62
  5. Step 5: Solve for x
    x = 417,239,803.62/31,129.88
  6. Step 6: Final answer
    x = 13,403.19

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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.