Home / 12,930.42-19,374.57-9,039.18

Finding the Fourth Proportional to 12,930.42, 19,374.57 and 9,039.18

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Solution

The fourth proportional to 12,930.42, 19,374.57 and 9,039.18 is: 13,544.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.42 : 19,374.57 = 9,039.18 : x
  2. Step 2: Convert to fraction form
    12,930.42/19,374.57 = 9,039.18/x
  3. Step 3: Cross multiply
    12,930.42x = 19,374.57 × 9,039.18
  4. Step 4: Simplify right side
    12,930.42x = 175,130,225.65
  5. Step 5: Solve for x
    x = 175,130,225.65/12,930.42
  6. Step 6: Final answer
    x = 13,544.05

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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.