Home / 14,139.03-21,210.84-4,779.60

Finding the Fourth Proportional to 14,139.03, 21,210.84 and 4,779.60

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Solution

The fourth proportional to 14,139.03, 21,210.84 and 4,779.60 is: 7,170.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,139.03 : 21,210.84 = 4,779.60 : x
  2. Step 2: Convert to fraction form
    14,139.03/21,210.84 = 4,779.60/x
  3. Step 3: Cross multiply
    14,139.03x = 21,210.84 × 4,779.60
  4. Step 4: Simplify right side
    14,139.03x = 101,379,330.86
  5. Step 5: Solve for x
    x = 101,379,330.86/14,139.03
  6. Step 6: Final answer
    x = 7,170.18

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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.