Home / 21,561.36-29,750.20-12,607.12

Finding the Fourth Proportional to 21,561.36, 29,750.20 and 12,607.12

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Solution

The fourth proportional to 21,561.36, 29,750.20 and 12,607.12 is: 17,395.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.36 : 29,750.20 = 12,607.12 : x
  2. Step 2: Convert to fraction form
    21,561.36/29,750.20 = 12,607.12/x
  3. Step 3: Cross multiply
    21,561.36x = 29,750.20 × 12,607.12
  4. Step 4: Simplify right side
    21,561.36x = 375,064,341.42
  5. Step 5: Solve for x
    x = 375,064,341.42/21,561.36
  6. Step 6: Final answer
    x = 17,395.21

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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.