Home / 21,263.64-29,338.36-11,830.40

Finding the Fourth Proportional to 21,263.64, 29,338.36 and 11,830.40

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Solution

The fourth proportional to 21,263.64, 29,338.36 and 11,830.40 is: 16,322.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.64 : 29,338.36 = 11,830.40 : x
  2. Step 2: Convert to fraction form
    21,263.64/29,338.36 = 11,830.40/x
  3. Step 3: Cross multiply
    21,263.64x = 29,338.36 × 11,830.40
  4. Step 4: Simplify right side
    21,263.64x = 347,084,534.14
  5. Step 5: Solve for x
    x = 347,084,534.14/21,263.64
  6. Step 6: Final answer
    x = 16,322.91

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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.