Home / 19,638.55-29,457.66-7,154.20

Finding the Fourth Proportional to 19,638.55, 29,457.66 and 7,154.20

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Solution

The fourth proportional to 19,638.55, 29,457.66 and 7,154.20 is: 10,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,638.55 : 29,457.66 = 7,154.20 : x
  2. Step 2: Convert to fraction form
    19,638.55/29,457.66 = 7,154.20/x
  3. Step 3: Cross multiply
    19,638.55x = 29,457.66 × 7,154.20
  4. Step 4: Simplify right side
    19,638.55x = 210,745,991.17
  5. Step 5: Solve for x
    x = 210,745,991.17/19,638.55
  6. Step 6: Final answer
    x = 10,731.24

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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.