Home / 13,505.72-18,639.77-7,537.77

Finding the Fourth Proportional to 13,505.72, 18,639.77 and 7,537.77

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Solution

The fourth proportional to 13,505.72, 18,639.77 and 7,537.77 is: 10,403.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,505.72 : 18,639.77 = 7,537.77 : x
  2. Step 2: Convert to fraction form
    13,505.72/18,639.77 = 7,537.77/x
  3. Step 3: Cross multiply
    13,505.72x = 18,639.77 × 7,537.77
  4. Step 4: Simplify right side
    13,505.72x = 140,502,303.82
  5. Step 5: Solve for x
    x = 140,502,303.82/13,505.72
  6. Step 6: Final answer
    x = 10,403.17

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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.