Home / 31,421.62-47,154.93-11,431.08

Finding the Fourth Proportional to 31,421.62, 47,154.93 and 11,431.08

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Solution

The fourth proportional to 31,421.62, 47,154.93 and 11,431.08 is: 17,154.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,421.62 : 47,154.93 = 11,431.08 : x
  2. Step 2: Convert to fraction form
    31,421.62/47,154.93 = 11,431.08/x
  3. Step 3: Cross multiply
    31,421.62x = 47,154.93 × 11,431.08
  4. Step 4: Simplify right side
    31,421.62x = 539,031,734.36
  5. Step 5: Solve for x
    x = 539,031,734.36/31,421.62
  6. Step 6: Final answer
    x = 17,154.80

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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.