Home / 13,389.04-18,476.04-7,420.36

Finding the Fourth Proportional to 13,389.04, 18,476.04 and 7,420.36

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Solution

The fourth proportional to 13,389.04, 18,476.04 and 7,420.36 is: 10,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,389.04 : 18,476.04 = 7,420.36 : x
  2. Step 2: Convert to fraction form
    13,389.04/18,476.04 = 7,420.36/x
  3. Step 3: Cross multiply
    13,389.04x = 18,476.04 × 7,420.36
  4. Step 4: Simplify right side
    13,389.04x = 137,098,868.17
  5. Step 5: Solve for x
    x = 137,098,868.17/13,389.04
  6. Step 6: Final answer
    x = 10,239.63

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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.