Home / 30,613.80-45,920.70-13,085.40

Finding the Fourth Proportional to 30,613.80, 45,920.70 and 13,085.40

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Solution

The fourth proportional to 30,613.80, 45,920.70 and 13,085.40 is: 19,628.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,613.80 : 45,920.70 = 13,085.40 : x
  2. Step 2: Convert to fraction form
    30,613.80/45,920.70 = 13,085.40/x
  3. Step 3: Cross multiply
    30,613.80x = 45,920.70 × 13,085.40
  4. Step 4: Simplify right side
    30,613.80x = 600,890,727.78
  5. Step 5: Solve for x
    x = 600,890,727.78/30,613.80
  6. Step 6: Final answer
    x = 19,628.10

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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.