Home / 30,386.76-45,574.92-13,742.88

Finding the Fourth Proportional to 30,386.76, 45,574.92 and 13,742.88

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Solution

The fourth proportional to 30,386.76, 45,574.92 and 13,742.88 is: 20,611.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386.76 : 45,574.92 = 13,742.88 : x
  2. Step 2: Convert to fraction form
    30,386.76/45,574.92 = 13,742.88/x
  3. Step 3: Cross multiply
    30,386.76x = 45,574.92 × 13,742.88
  4. Step 4: Simplify right side
    30,386.76x = 626,330,656.57
  5. Step 5: Solve for x
    x = 626,330,656.57/30,386.76
  6. Step 6: Final answer
    x = 20,611.96

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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.