Home / 21,263.10-29,349.60-13,709.44

Finding the Fourth Proportional to 21,263.10, 29,349.60 and 13,709.44

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Solution

The fourth proportional to 21,263.10, 29,349.60 and 13,709.44 is: 18,923.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,263.10 : 29,349.60 = 13,709.44 : x
  2. Step 2: Convert to fraction form
    21,263.10/29,349.60 = 13,709.44/x
  3. Step 3: Cross multiply
    21,263.10x = 29,349.60 × 13,709.44
  4. Step 4: Simplify right side
    21,263.10x = 402,366,580.22
  5. Step 5: Solve for x
    x = 402,366,580.22/21,263.10
  6. Step 6: Final answer
    x = 18,923.23

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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.