Home / 14,421.09-19,871.54-10,638.25

Finding the Fourth Proportional to 14,421.09, 19,871.54 and 10,638.25

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Solution

The fourth proportional to 14,421.09, 19,871.54 and 10,638.25 is: 14,658.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.09 : 19,871.54 = 10,638.25 : x
  2. Step 2: Convert to fraction form
    14,421.09/19,871.54 = 10,638.25/x
  3. Step 3: Cross multiply
    14,421.09x = 19,871.54 × 10,638.25
  4. Step 4: Simplify right side
    14,421.09x = 211,398,519.05
  5. Step 5: Solve for x
    x = 211,398,519.05/14,421.09
  6. Step 6: Final answer
    x = 14,658.99

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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.