Home / 20,950.08-31,415.28-7,802.16

Finding the Fourth Proportional to 20,950.08, 31,415.28 and 7,802.16

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Solution

The fourth proportional to 20,950.08, 31,415.28 and 7,802.16 is: 11,699.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.08 : 31,415.28 = 7,802.16 : x
  2. Step 2: Convert to fraction form
    20,950.08/31,415.28 = 7,802.16/x
  3. Step 3: Cross multiply
    20,950.08x = 31,415.28 × 7,802.16
  4. Step 4: Simplify right side
    20,950.08x = 245,107,041.00
  5. Step 5: Solve for x
    x = 245,107,041.00/20,950.08
  6. Step 6: Final answer
    x = 11,699.58

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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.