Home / 13,950.51-20,925.81-3,420.58

Finding the Fourth Proportional to 13,950.51, 20,925.81 and 3,420.58

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Solution

The fourth proportional to 13,950.51, 20,925.81 and 3,420.58 is: 5,130.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,950.51 : 20,925.81 = 3,420.58 : x
  2. Step 2: Convert to fraction form
    13,950.51/20,925.81 = 3,420.58/x
  3. Step 3: Cross multiply
    13,950.51x = 20,925.81 × 3,420.58
  4. Step 4: Simplify right side
    13,950.51x = 71,578,390.07
  5. Step 5: Solve for x
    x = 71,578,390.07/13,950.51
  6. Step 6: Final answer
    x = 5,130.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.