Home / 19,326.48-28,990.10-12,705.16

Finding the Fourth Proportional to 19,326.48, 28,990.10 and 12,705.16

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Solution

The fourth proportional to 19,326.48, 28,990.10 and 12,705.16 is: 19,057.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,326.48 : 28,990.10 = 12,705.16 : x
  2. Step 2: Convert to fraction form
    19,326.48/28,990.10 = 12,705.16/x
  3. Step 3: Cross multiply
    19,326.48x = 28,990.10 × 12,705.16
  4. Step 4: Simplify right side
    19,326.48x = 368,323,858.92
  5. Step 5: Solve for x
    x = 368,323,858.92/19,326.48
  6. Step 6: Final answer
    x = 19,057.99

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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.