Home / 19,415.12-26,809.80-15,216.08

Finding the Fourth Proportional to 19,415.12, 26,809.80 and 15,216.08

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Solution

The fourth proportional to 19,415.12, 26,809.80 and 15,216.08 is: 21,011.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,415.12 : 26,809.80 = 15,216.08 : x
  2. Step 2: Convert to fraction form
    19,415.12/26,809.80 = 15,216.08/x
  3. Step 3: Cross multiply
    19,415.12x = 26,809.80 × 15,216.08
  4. Step 4: Simplify right side
    19,415.12x = 407,940,061.58
  5. Step 5: Solve for x
    x = 407,940,061.58/19,415.12
  6. Step 6: Final answer
    x = 21,011.46

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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.