Home / 13,051.36-18,011.60-7,386.40

Finding the Fourth Proportional to 13,051.36, 18,011.60 and 7,386.40

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Solution

The fourth proportional to 13,051.36, 18,011.60 and 7,386.40 is: 10,193.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,051.36 : 18,011.60 = 7,386.40 : x
  2. Step 2: Convert to fraction form
    13,051.36/18,011.60 = 7,386.40/x
  3. Step 3: Cross multiply
    13,051.36x = 18,011.60 × 7,386.40
  4. Step 4: Simplify right side
    13,051.36x = 133,040,882.24
  5. Step 5: Solve for x
    x = 133,040,882.24/13,051.36
  6. Step 6: Final answer
    x = 10,193.64

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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.