Home / 21,698.08-29,934.80-14,153.20

Finding the Fourth Proportional to 21,698.08, 29,934.80 and 14,153.20

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Solution

The fourth proportional to 21,698.08, 29,934.80 and 14,153.20 is: 19,525.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,698.08 : 29,934.80 = 14,153.20 : x
  2. Step 2: Convert to fraction form
    21,698.08/29,934.80 = 14,153.20/x
  3. Step 3: Cross multiply
    21,698.08x = 29,934.80 × 14,153.20
  4. Step 4: Simplify right side
    21,698.08x = 423,673,211.36
  5. Step 5: Solve for x
    x = 423,673,211.36/21,698.08
  6. Step 6: Final answer
    x = 19,525.84

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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.