Home / 19,289.52-26,641.40-12,990.96

Finding the Fourth Proportional to 19,289.52, 26,641.40 and 12,990.96

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Solution

The fourth proportional to 19,289.52, 26,641.40 and 12,990.96 is: 17,942.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,289.52 : 26,641.40 = 12,990.96 : x
  2. Step 2: Convert to fraction form
    19,289.52/26,641.40 = 12,990.96/x
  3. Step 3: Cross multiply
    19,289.52x = 26,641.40 × 12,990.96
  4. Step 4: Simplify right side
    19,289.52x = 346,097,361.74
  5. Step 5: Solve for x
    x = 346,097,361.74/19,289.52
  6. Step 6: Final answer
    x = 17,942.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.