Home / 30,341.88-45,488.40-20,357.04

Finding the Fourth Proportional to 30,341.88, 45,488.40 and 20,357.04

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Solution

The fourth proportional to 30,341.88, 45,488.40 and 20,357.04 is: 30,519.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,341.88 : 45,488.40 = 20,357.04 : x
  2. Step 2: Convert to fraction form
    30,341.88/45,488.40 = 20,357.04/x
  3. Step 3: Cross multiply
    30,341.88x = 45,488.40 × 20,357.04
  4. Step 4: Simplify right side
    30,341.88x = 926,009,178.34
  5. Step 5: Solve for x
    x = 926,009,178.34/30,341.88
  6. Step 6: Final answer
    x = 30,519.18

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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.