Home / 21,561.40-29,750.24-12,607.16

Finding the Fourth Proportional to 21,561.40, 29,750.24 and 12,607.16

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Solution

The fourth proportional to 21,561.40, 29,750.24 and 12,607.16 is: 17,395.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,561.40 : 29,750.24 = 12,607.16 : x
  2. Step 2: Convert to fraction form
    21,561.40/29,750.24 = 12,607.16/x
  3. Step 3: Cross multiply
    21,561.40x = 29,750.24 × 12,607.16
  4. Step 4: Simplify right side
    21,561.40x = 375,066,035.72
  5. Step 5: Solve for x
    x = 375,066,035.72/21,561.40
  6. Step 6: Final answer
    x = 17,395.25

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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.