Home / 30,343.13-45,519.78-13,702.80

Finding the Fourth Proportional to 30,343.13, 45,519.78 and 13,702.80

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Solution

The fourth proportional to 30,343.13, 45,519.78 and 13,702.80 is: 20,556.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,343.13 : 45,519.78 = 13,702.80 : x
  2. Step 2: Convert to fraction form
    30,343.13/45,519.78 = 13,702.80/x
  3. Step 3: Cross multiply
    30,343.13x = 45,519.78 × 13,702.80
  4. Step 4: Simplify right side
    30,343.13x = 623,748,441.38
  5. Step 5: Solve for x
    x = 623,748,441.38/30,343.13
  6. Step 6: Final answer
    x = 20,556.50

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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.