Home / 31,455.65-47,186.08-13,686.92

Finding the Fourth Proportional to 31,455.65, 47,186.08 and 13,686.92

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Solution

The fourth proportional to 31,455.65, 47,186.08 and 13,686.92 is: 20,531.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,455.65 : 47,186.08 = 13,686.92 : x
  2. Step 2: Convert to fraction form
    31,455.65/47,186.08 = 13,686.92/x
  3. Step 3: Cross multiply
    31,455.65x = 47,186.08 × 13,686.92
  4. Step 4: Simplify right side
    31,455.65x = 645,831,866.14
  5. Step 5: Solve for x
    x = 645,831,866.14/31,455.65
  6. Step 6: Final answer
    x = 20,531.51

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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.