Home / 20,722.24-28,548.48-14,423.68

Finding the Fourth Proportional to 20,722.24, 28,548.48 and 14,423.68

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Solution

The fourth proportional to 20,722.24, 28,548.48 and 14,423.68 is: 19,871.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.24 : 28,548.48 = 14,423.68 : x
  2. Step 2: Convert to fraction form
    20,722.24/28,548.48 = 14,423.68/x
  3. Step 3: Cross multiply
    20,722.24x = 28,548.48 × 14,423.68
  4. Step 4: Simplify right side
    20,722.24x = 411,774,140.01
  5. Step 5: Solve for x
    x = 411,774,140.01/20,722.24
  6. Step 6: Final answer
    x = 19,871.12

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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.