Home / 21,855.24-30,151.60-13,457.16

Finding the Fourth Proportional to 21,855.24, 30,151.60 and 13,457.16

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Solution

The fourth proportional to 21,855.24, 30,151.60 and 13,457.16 is: 18,565.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,855.24 : 30,151.60 = 13,457.16 : x
  2. Step 2: Convert to fraction form
    21,855.24/30,151.60 = 13,457.16/x
  3. Step 3: Cross multiply
    21,855.24x = 30,151.60 × 13,457.16
  4. Step 4: Simplify right side
    21,855.24x = 405,754,905.46
  5. Step 5: Solve for x
    x = 405,754,905.46/21,855.24
  6. Step 6: Final answer
    x = 18,565.57

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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.