Home / 13,878.02-20,831.70-13,564.64

Finding the Fourth Proportional to 13,878.02, 20,831.70 and 13,564.64

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Solution

The fourth proportional to 13,878.02, 20,831.70 and 13,564.64 is: 20,361.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,878.02 : 20,831.70 = 13,564.64 : x
  2. Step 2: Convert to fraction form
    13,878.02/20,831.70 = 13,564.64/x
  3. Step 3: Cross multiply
    13,878.02x = 20,831.70 × 13,564.64
  4. Step 4: Simplify right side
    13,878.02x = 282,574,511.09
  5. Step 5: Solve for x
    x = 282,574,511.09/13,878.02
  6. Step 6: Final answer
    x = 20,361.30

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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.