Home / 13,817.85-19,045.86-9,779.46

Finding the Fourth Proportional to 13,817.85, 19,045.86 and 9,779.46

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Solution

The fourth proportional to 13,817.85, 19,045.86 and 9,779.46 is: 13,479.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,817.85 : 19,045.86 = 9,779.46 : x
  2. Step 2: Convert to fraction form
    13,817.85/19,045.86 = 9,779.46/x
  3. Step 3: Cross multiply
    13,817.85x = 19,045.86 × 9,779.46
  4. Step 4: Simplify right side
    13,817.85x = 186,258,226.04
  5. Step 5: Solve for x
    x = 186,258,226.04/13,817.85
  6. Step 6: Final answer
    x = 13,479.54

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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.