Home / 20,698.16-31,028.51-7,547.45

Finding the Fourth Proportional to 20,698.16, 31,028.51 and 7,547.45

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Solution

The fourth proportional to 20,698.16, 31,028.51 and 7,547.45 is: 11,314.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,698.16 : 31,028.51 = 7,547.45 : x
  2. Step 2: Convert to fraction form
    20,698.16/31,028.51 = 7,547.45/x
  3. Step 3: Cross multiply
    20,698.16x = 31,028.51 × 7,547.45
  4. Step 4: Simplify right side
    20,698.16x = 234,185,991.53
  5. Step 5: Solve for x
    x = 234,185,991.53/20,698.16
  6. Step 6: Final answer
    x = 11,314.34

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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.