Home / 19,216.40-28,867.80-13,384.40

Finding the Fourth Proportional to 19,216.40, 28,867.80 and 13,384.40

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Solution

The fourth proportional to 19,216.40, 28,867.80 and 13,384.40 is: 20,106.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,216.40 : 28,867.80 = 13,384.40 : x
  2. Step 2: Convert to fraction form
    19,216.40/28,867.80 = 13,384.40/x
  3. Step 3: Cross multiply
    19,216.40x = 28,867.80 × 13,384.40
  4. Step 4: Simplify right side
    19,216.40x = 386,378,182.32
  5. Step 5: Solve for x
    x = 386,378,182.32/19,216.40
  6. Step 6: Final answer
    x = 20,106.69

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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.