Home / 52,011.26-78,019.12-20,428.17

Finding the Fourth Proportional to 52,011.26, 78,019.12 and 20,428.17

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Solution

The fourth proportional to 52,011.26, 78,019.12 and 20,428.17 is: 30,643.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,011.26 : 78,019.12 = 20,428.17 : x
  2. Step 2: Convert to fraction form
    52,011.26/78,019.12 = 20,428.17/x
  3. Step 3: Cross multiply
    52,011.26x = 78,019.12 × 20,428.17
  4. Step 4: Simplify right side
    52,011.26x = 1,593,787,846.61
  5. Step 5: Solve for x
    x = 1,593,787,846.61/52,011.26
  6. Step 6: Final answer
    x = 30,643.13

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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.