Home / 21,490.04-29,658.02-11,930.51

Finding the Fourth Proportional to 21,490.04, 29,658.02 and 11,930.51

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Solution

The fourth proportional to 21,490.04, 29,658.02 and 11,930.51 is: 16,465.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,490.04 : 29,658.02 = 11,930.51 : x
  2. Step 2: Convert to fraction form
    21,490.04/29,658.02 = 11,930.51/x
  3. Step 3: Cross multiply
    21,490.04x = 29,658.02 × 11,930.51
  4. Step 4: Simplify right side
    21,490.04x = 353,835,318.68
  5. Step 5: Solve for x
    x = 353,835,318.68/21,490.04
  6. Step 6: Final answer
    x = 16,465.08

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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.