Home / 12,970.33-19,427.55-8,787.39

Finding the Fourth Proportional to 12,970.33, 19,427.55 and 8,787.39

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Solution

The fourth proportional to 12,970.33, 19,427.55 and 8,787.39 is: 13,162.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,970.33 : 19,427.55 = 8,787.39 : x
  2. Step 2: Convert to fraction form
    12,970.33/19,427.55 = 8,787.39/x
  3. Step 3: Cross multiply
    12,970.33x = 19,427.55 × 8,787.39
  4. Step 4: Simplify right side
    12,970.33x = 170,717,352.79
  5. Step 5: Solve for x
    x = 170,717,352.79/12,970.33
  6. Step 6: Final answer
    x = 13,162.15

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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.