Home / 21,235.77-29,298.51-11,802.51

Finding the Fourth Proportional to 21,235.77, 29,298.51 and 11,802.51

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Solution

The fourth proportional to 21,235.77, 29,298.51 and 11,802.51 is: 16,283.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.77 : 29,298.51 = 11,802.51 : x
  2. Step 2: Convert to fraction form
    21,235.77/29,298.51 = 11,802.51/x
  3. Step 3: Cross multiply
    21,235.77x = 29,298.51 × 11,802.51
  4. Step 4: Simplify right side
    21,235.77x = 345,795,957.26
  5. Step 5: Solve for x
    x = 345,795,957.26/21,235.77
  6. Step 6: Final answer
    x = 16,283.66

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Double scale
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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.