Home / 12,943.68-19,428.48-12,816.96

Finding the Fourth Proportional to 12,943.68, 19,428.48 and 12,816.96

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Solution

The fourth proportional to 12,943.68, 19,428.48 and 12,816.96 is: 19,238.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,943.68 : 19,428.48 = 12,816.96 : x
  2. Step 2: Convert to fraction form
    12,943.68/19,428.48 = 12,816.96/x
  3. Step 3: Cross multiply
    12,943.68x = 19,428.48 × 12,816.96
  4. Step 4: Simplify right side
    12,943.68x = 249,014,051.02
  5. Step 5: Solve for x
    x = 249,014,051.02/12,943.68
  6. Step 6: Final answer
    x = 19,238.27

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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.