Home / 13,616.64-20,325.60-11,681.28

Finding the Fourth Proportional to 13,616.64, 20,325.60 and 11,681.28

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Solution

The fourth proportional to 13,616.64, 20,325.60 and 11,681.28 is: 17,436.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.64 : 20,325.60 = 11,681.28 : x
  2. Step 2: Convert to fraction form
    13,616.64/20,325.60 = 11,681.28/x
  3. Step 3: Cross multiply
    13,616.64x = 20,325.60 × 11,681.28
  4. Step 4: Simplify right side
    13,616.64x = 237,429,024.77
  5. Step 5: Solve for x
    x = 237,429,024.77/13,616.64
  6. Step 6: Final answer
    x = 17,436.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.