Home / 20,722.16-28,588.05-14,438.18

Finding the Fourth Proportional to 20,722.16, 28,588.05 and 14,438.18

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Solution

The fourth proportional to 20,722.16, 28,588.05 and 14,438.18 is: 19,918.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.16 : 28,588.05 = 14,438.18 : x
  2. Step 2: Convert to fraction form
    20,722.16/28,588.05 = 14,438.18/x
  3. Step 3: Cross multiply
    20,722.16x = 28,588.05 × 14,438.18
  4. Step 4: Simplify right side
    20,722.16x = 412,759,268.81
  5. Step 5: Solve for x
    x = 412,759,268.81/20,722.16
  6. Step 6: Final answer
    x = 19,918.74

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1.5x scale

Why These Related Problems?

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