Home / 30,065.21-45,098.11-13,426.08

Finding the Fourth Proportional to 30,065.21, 45,098.11 and 13,426.08

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Solution

The fourth proportional to 30,065.21, 45,098.11 and 13,426.08 is: 20,139.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,065.21 : 45,098.11 = 13,426.08 : x
  2. Step 2: Convert to fraction form
    30,065.21/45,098.11 = 13,426.08/x
  3. Step 3: Cross multiply
    30,065.21x = 45,098.11 × 13,426.08
  4. Step 4: Simplify right side
    30,065.21x = 605,490,832.71
  5. Step 5: Solve for x
    x = 605,490,832.71/30,065.21
  6. Step 6: Final answer
    x = 20,139.26

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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.