Home / 20,277.87-30,417-7,130.35

Finding the Fourth Proportional to 20,277.87, 30,417 and 7,130.35

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Solution

The fourth proportional to 20,277.87, 30,417 and 7,130.35 is: 10,695.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.87 : 30,417 = 7,130.35 : x
  2. Step 2: Convert to fraction form
    20,277.87/30,417 = 7,130.35/x
  3. Step 3: Cross multiply
    20,277.87x = 30,417 × 7,130.35
  4. Step 4: Simplify right side
    20,277.87x = 216,883,855.95
  5. Step 5: Solve for x
    x = 216,883,855.95/20,277.87
  6. Step 6: Final answer
    x = 10,695.59

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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.