Home / 13,620.02-18,795.51-7,651.56

Finding the Fourth Proportional to 13,620.02, 18,795.51 and 7,651.56

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Solution

The fourth proportional to 13,620.02, 18,795.51 and 7,651.56 is: 10,559.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,620.02 : 18,795.51 = 7,651.56 : x
  2. Step 2: Convert to fraction form
    13,620.02/18,795.51 = 7,651.56/x
  3. Step 3: Cross multiply
    13,620.02x = 18,795.51 × 7,651.56
  4. Step 4: Simplify right side
    13,620.02x = 143,814,925.51
  5. Step 5: Solve for x
    x = 143,814,925.51/13,620.02
  6. Step 6: Final answer
    x = 10,559.09

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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.