Home / 18,760.16-28,140.36-4,720.16

Finding the Fourth Proportional to 18,760.16, 28,140.36 and 4,720.16

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Solution

The fourth proportional to 18,760.16, 28,140.36 and 4,720.16 is: 7,080.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,760.16 : 28,140.36 = 4,720.16 : x
  2. Step 2: Convert to fraction form
    18,760.16/28,140.36 = 4,720.16/x
  3. Step 3: Cross multiply
    18,760.16x = 28,140.36 × 4,720.16
  4. Step 4: Simplify right side
    18,760.16x = 132,827,001.66
  5. Step 5: Solve for x
    x = 132,827,001.66/18,760.16
  6. Step 6: Final answer
    x = 7,080.27

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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.