Home / 19,459.21-29,170.13-12,419.35

Finding the Fourth Proportional to 19,459.21, 29,170.13 and 12,419.35

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Solution

The fourth proportional to 19,459.21, 29,170.13 and 12,419.35 is: 18,617.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,459.21 : 29,170.13 = 12,419.35 : x
  2. Step 2: Convert to fraction form
    19,459.21/29,170.13 = 12,419.35/x
  3. Step 3: Cross multiply
    19,459.21x = 29,170.13 × 12,419.35
  4. Step 4: Simplify right side
    19,459.21x = 362,274,054.02
  5. Step 5: Solve for x
    x = 362,274,054.02/19,459.21
  6. Step 6: Final answer
    x = 18,617.10

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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.