Home / 13,870.70-19,145.12-8,562.46

Finding the Fourth Proportional to 13,870.70, 19,145.12 and 8,562.46

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Solution

The fourth proportional to 13,870.70, 19,145.12 and 8,562.46 is: 11,818.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,870.70 : 19,145.12 = 8,562.46 : x
  2. Step 2: Convert to fraction form
    13,870.70/19,145.12 = 8,562.46/x
  3. Step 3: Cross multiply
    13,870.70x = 19,145.12 × 8,562.46
  4. Step 4: Simplify right side
    13,870.70x = 163,929,324.20
  5. Step 5: Solve for x
    x = 163,929,324.20/13,870.70
  6. Step 6: Final answer
    x = 11,818.39

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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.