Home / 13,377.89-18,461.47-7,409.56

Finding the Fourth Proportional to 13,377.89, 18,461.47 and 7,409.56

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Solution

The fourth proportional to 13,377.89, 18,461.47 and 7,409.56 is: 10,225.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,377.89 : 18,461.47 = 7,409.56 : x
  2. Step 2: Convert to fraction form
    13,377.89/18,461.47 = 7,409.56/x
  3. Step 3: Cross multiply
    13,377.89x = 18,461.47 × 7,409.56
  4. Step 4: Simplify right side
    13,377.89x = 136,791,369.65
  5. Step 5: Solve for x
    x = 136,791,369.65/13,377.89
  6. Step 6: Final answer
    x = 10,225.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.