Home / 13,315.77-18,368.84-10,800.72

Finding the Fourth Proportional to 13,315.77, 18,368.84 and 10,800.72

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Solution

The fourth proportional to 13,315.77, 18,368.84 and 10,800.72 is: 14,899.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315.77 : 18,368.84 = 10,800.72 : x
  2. Step 2: Convert to fraction form
    13,315.77/18,368.84 = 10,800.72/x
  3. Step 3: Cross multiply
    13,315.77x = 18,368.84 × 10,800.72
  4. Step 4: Simplify right side
    13,315.77x = 198,396,724.57
  5. Step 5: Solve for x
    x = 198,396,724.57/13,315.77
  6. Step 6: Final answer
    x = 14,899.38

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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.