Home / 21,035.99-29,032.80-13,864.81

Finding the Fourth Proportional to 21,035.99, 29,032.80 and 13,864.81

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Solution

The fourth proportional to 21,035.99, 29,032.80 and 13,864.81 is: 19,135.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,035.99 : 29,032.80 = 13,864.81 : x
  2. Step 2: Convert to fraction form
    21,035.99/29,032.80 = 13,864.81/x
  3. Step 3: Cross multiply
    21,035.99x = 29,032.80 × 13,864.81
  4. Step 4: Simplify right side
    21,035.99x = 402,534,186.44
  5. Step 5: Solve for x
    x = 402,534,186.44/21,035.99
  6. Step 6: Final answer
    x = 19,135.50

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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.