Home / 18,820.16-28,232.04-7,130.24

Finding the Fourth Proportional to 18,820.16, 28,232.04 and 7,130.24

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Solution

The fourth proportional to 18,820.16, 28,232.04 and 7,130.24 is: 10,696.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,820.16 : 28,232.04 = 7,130.24 : x
  2. Step 2: Convert to fraction form
    18,820.16/28,232.04 = 7,130.24/x
  3. Step 3: Cross multiply
    18,820.16x = 28,232.04 × 7,130.24
  4. Step 4: Simplify right side
    18,820.16x = 201,301,220.89
  5. Step 5: Solve for x
    x = 201,301,220.89/18,820.16
  6. Step 6: Final answer
    x = 10,696.04

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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.