Home / 13,857.53-19,117.55-9,135.77

Finding the Fourth Proportional to 13,857.53, 19,117.55 and 9,135.77

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Solution

The fourth proportional to 13,857.53, 19,117.55 and 9,135.77 is: 12,603.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.53 : 19,117.55 = 9,135.77 : x
  2. Step 2: Convert to fraction form
    13,857.53/19,117.55 = 9,135.77/x
  3. Step 3: Cross multiply
    13,857.53x = 19,117.55 × 9,135.77
  4. Step 4: Simplify right side
    13,857.53x = 174,653,467.02
  5. Step 5: Solve for x
    x = 174,653,467.02/13,857.53
  6. Step 6: Final answer
    x = 12,603.51

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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.