Home / 20,320.47-28,045.24-12,361.16

Finding the Fourth Proportional to 20,320.47, 28,045.24 and 12,361.16

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Solution

The fourth proportional to 20,320.47, 28,045.24 and 12,361.16 is: 17,060.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.47 : 28,045.24 = 12,361.16 : x
  2. Step 2: Convert to fraction form
    20,320.47/28,045.24 = 12,361.16/x
  3. Step 3: Cross multiply
    20,320.47x = 28,045.24 × 12,361.16
  4. Step 4: Simplify right side
    20,320.47x = 346,671,580.33
  5. Step 5: Solve for x
    x = 346,671,580.33/20,320.47
  6. Step 6: Final answer
    x = 17,060.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.