Home / 30,111.12-45,169.75-10,389.62

Finding the Fourth Proportional to 30,111.12, 45,169.75 and 10,389.62

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Solution

The fourth proportional to 30,111.12, 45,169.75 and 10,389.62 is: 15,585.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,111.12 : 45,169.75 = 10,389.62 : x
  2. Step 2: Convert to fraction form
    30,111.12/45,169.75 = 10,389.62/x
  3. Step 3: Cross multiply
    30,111.12x = 45,169.75 × 10,389.62
  4. Step 4: Simplify right side
    30,111.12x = 469,296,409.83
  5. Step 5: Solve for x
    x = 469,296,409.83/30,111.12
  6. Step 6: Final answer
    x = 15,585.49

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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.