Home / 20,925.51-31,361.58-9,807.68

Finding the Fourth Proportional to 20,925.51, 31,361.58 and 9,807.68

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Solution

The fourth proportional to 20,925.51, 31,361.58 and 9,807.68 is: 14,699.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,925.51 : 31,361.58 = 9,807.68 : x
  2. Step 2: Convert to fraction form
    20,925.51/31,361.58 = 9,807.68/x
  3. Step 3: Cross multiply
    20,925.51x = 31,361.58 × 9,807.68
  4. Step 4: Simplify right side
    20,925.51x = 307,584,184.13
  5. Step 5: Solve for x
    x = 307,584,184.13/20,925.51
  6. Step 6: Final answer
    x = 14,699.01

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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.