Home / 10,005.45-13,790.14-7,312.26

Finding the Fourth Proportional to 10,005.45, 13,790.14 and 7,312.26

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Solution

The fourth proportional to 10,005.45, 13,790.14 and 7,312.26 is: 10,078.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,005.45 : 13,790.14 = 7,312.26 : x
  2. Step 2: Convert to fraction form
    10,005.45/13,790.14 = 7,312.26/x
  3. Step 3: Cross multiply
    10,005.45x = 13,790.14 × 7,312.26
  4. Step 4: Simplify right side
    10,005.45x = 100,837,089.12
  5. Step 5: Solve for x
    x = 100,837,089.12/10,005.45
  6. Step 6: Final answer
    x = 10,078.22

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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.