Home / 13,585.77-18,732.58-12,745.13

Finding the Fourth Proportional to 13,585.77, 18,732.58 and 12,745.13

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Solution

The fourth proportional to 13,585.77, 18,732.58 and 12,745.13 is: 17,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,585.77 : 18,732.58 = 12,745.13 : x
  2. Step 2: Convert to fraction form
    13,585.77/18,732.58 = 12,745.13/x
  3. Step 3: Cross multiply
    13,585.77x = 18,732.58 × 12,745.13
  4. Step 4: Simplify right side
    13,585.77x = 238,749,041.81
  5. Step 5: Solve for x
    x = 238,749,041.81/13,585.77
  6. Step 6: Final answer
    x = 17,573.46

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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.