Home / 14,140.55-21,211.13-4,279.81

Finding the Fourth Proportional to 14,140.55, 21,211.13 and 4,279.81

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Solution

The fourth proportional to 14,140.55, 21,211.13 and 4,279.81 is: 6,419.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.55 : 21,211.13 = 4,279.81 : x
  2. Step 2: Convert to fraction form
    14,140.55/21,211.13 = 4,279.81/x
  3. Step 3: Cross multiply
    14,140.55x = 21,211.13 × 4,279.81
  4. Step 4: Simplify right side
    14,140.55x = 90,779,606.29
  5. Step 5: Solve for x
    x = 90,779,606.29/14,140.55
  6. Step 6: Final answer
    x = 6,419.81

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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.