Home / 30,192.40-45,292.65-12,658.06

Finding the Fourth Proportional to 30,192.40, 45,292.65 and 12,658.06

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Solution

The fourth proportional to 30,192.40, 45,292.65 and 12,658.06 is: 18,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,192.40 : 45,292.65 = 12,658.06 : x
  2. Step 2: Convert to fraction form
    30,192.40/45,292.65 = 12,658.06/x
  3. Step 3: Cross multiply
    30,192.40x = 45,292.65 × 12,658.06
  4. Step 4: Simplify right side
    30,192.40x = 573,317,081.26
  5. Step 5: Solve for x
    x = 573,317,081.26/30,192.40
  6. Step 6: Final answer
    x = 18,988.79

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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.