Home / 20,557.62-30,655.94-20,370.51

Finding the Fourth Proportional to 20,557.62, 30,655.94 and 20,370.51

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Solution

The fourth proportional to 20,557.62, 30,655.94 and 20,370.51 is: 30,376.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.62 : 30,655.94 = 20,370.51 : x
  2. Step 2: Convert to fraction form
    20,557.62/30,655.94 = 20,370.51/x
  3. Step 3: Cross multiply
    20,557.62x = 30,655.94 × 20,370.51
  4. Step 4: Simplify right side
    20,557.62x = 624,477,030.48
  5. Step 5: Solve for x
    x = 624,477,030.48/20,557.62
  6. Step 6: Final answer
    x = 30,376.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.