Home / 30,131.14-45,178.47-13,488.07

Finding the Fourth Proportional to 30,131.14, 45,178.47 and 13,488.07

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Solution

The fourth proportional to 30,131.14, 45,178.47 and 13,488.07 is: 20,223.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,131.14 : 45,178.47 = 13,488.07 : x
  2. Step 2: Convert to fraction form
    30,131.14/45,178.47 = 13,488.07/x
  3. Step 3: Cross multiply
    30,131.14x = 45,178.47 × 13,488.07
  4. Step 4: Simplify right side
    30,131.14x = 609,370,139.96
  5. Step 5: Solve for x
    x = 609,370,139.96/30,131.14
  6. Step 6: Final answer
    x = 20,223.94

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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.