Home / 14,478.09-21,709.80-7,071.45

Finding the Fourth Proportional to 14,478.09, 21,709.80 and 7,071.45

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Solution

The fourth proportional to 14,478.09, 21,709.80 and 7,071.45 is: 10,603.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,478.09 : 21,709.80 = 7,071.45 : x
  2. Step 2: Convert to fraction form
    14,478.09/21,709.80 = 7,071.45/x
  3. Step 3: Cross multiply
    14,478.09x = 21,709.80 × 7,071.45
  4. Step 4: Simplify right side
    14,478.09x = 153,519,765.21
  5. Step 5: Solve for x
    x = 153,519,765.21/14,478.09
  6. Step 6: Final answer
    x = 10,603.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.