Home / 30,085.40-45,132.28-12,551.19

Finding the Fourth Proportional to 30,085.40, 45,132.28 and 12,551.19

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Solution

The fourth proportional to 30,085.40, 45,132.28 and 12,551.19 is: 18,828.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,085.40 : 45,132.28 = 12,551.19 : x
  2. Step 2: Convert to fraction form
    30,085.40/45,132.28 = 12,551.19/x
  3. Step 3: Cross multiply
    30,085.40x = 45,132.28 × 12,551.19
  4. Step 4: Simplify right side
    30,085.40x = 566,463,790.04
  5. Step 5: Solve for x
    x = 566,463,790.04/30,085.40
  6. Step 6: Final answer
    x = 18,828.53

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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.