Home / 21,303.04-29,398.80-11,871.52

Finding the Fourth Proportional to 21,303.04, 29,398.80 and 11,871.52

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Solution

The fourth proportional to 21,303.04, 29,398.80 and 11,871.52 is: 16,383.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,303.04 : 29,398.80 = 11,871.52 : x
  2. Step 2: Convert to fraction form
    21,303.04/29,398.80 = 11,871.52/x
  3. Step 3: Cross multiply
    21,303.04x = 29,398.80 × 11,871.52
  4. Step 4: Simplify right side
    21,303.04x = 349,008,442.18
  5. Step 5: Solve for x
    x = 349,008,442.18/21,303.04
  6. Step 6: Final answer
    x = 16,383.03

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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.