Home / 13,235.40-18,264.77-7,185.76

Finding the Fourth Proportional to 13,235.40, 18,264.77 and 7,185.76

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Solution

The fourth proportional to 13,235.40, 18,264.77 and 7,185.76 is: 9,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,235.40 : 18,264.77 = 7,185.76 : x
  2. Step 2: Convert to fraction form
    13,235.40/18,264.77 = 7,185.76/x
  3. Step 3: Cross multiply
    13,235.40x = 18,264.77 × 7,185.76
  4. Step 4: Simplify right side
    13,235.40x = 131,246,342.19
  5. Step 5: Solve for x
    x = 131,246,342.19/13,235.40
  6. Step 6: Final answer
    x = 9,916.31

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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.