Home / 31,931.65-47,897.48-13,191.09

Finding the Fourth Proportional to 31,931.65, 47,897.48 and 13,191.09

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Solution

The fourth proportional to 31,931.65, 47,897.48 and 13,191.09 is: 19,786.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.65 : 47,897.48 = 13,191.09 : x
  2. Step 2: Convert to fraction form
    31,931.65/47,897.48 = 13,191.09/x
  3. Step 3: Cross multiply
    31,931.65x = 47,897.48 × 13,191.09
  4. Step 4: Simplify right side
    31,931.65x = 631,819,969.45
  5. Step 5: Solve for x
    x = 631,819,969.45/31,931.65
  6. Step 6: Final answer
    x = 19,786.64

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Similar ratio
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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.