Home / 18,368.36-25,312.79-12,389.64

Finding the Fourth Proportional to 18,368.36, 25,312.79 and 12,389.64

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Solution

The fourth proportional to 18,368.36, 25,312.79 and 12,389.64 is: 17,073.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,368.36 : 25,312.79 = 12,389.64 : x
  2. Step 2: Convert to fraction form
    18,368.36/25,312.79 = 12,389.64/x
  3. Step 3: Cross multiply
    18,368.36x = 25,312.79 × 12,389.64
  4. Step 4: Simplify right side
    18,368.36x = 313,616,293.55
  5. Step 5: Solve for x
    x = 313,616,293.55/18,368.36
  6. Step 6: Final answer
    x = 17,073.73

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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.