Home / 20,130.56-27,776.32-13,056.32

Finding the Fourth Proportional to 20,130.56, 27,776.32 and 13,056.32

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Solution

The fourth proportional to 20,130.56, 27,776.32 and 13,056.32 is: 18,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.56 : 27,776.32 = 13,056.32 : x
  2. Step 2: Convert to fraction form
    20,130.56/27,776.32 = 13,056.32/x
  3. Step 3: Cross multiply
    20,130.56x = 27,776.32 × 13,056.32
  4. Step 4: Simplify right side
    20,130.56x = 362,656,522.34
  5. Step 5: Solve for x
    x = 362,656,522.34/20,130.56
  6. Step 6: Final answer
    x = 18,015.22

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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.