Home / 13,779.93-19,013.17-7,810.23

Finding the Fourth Proportional to 13,779.93, 19,013.17 and 7,810.23

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Solution

The fourth proportional to 13,779.93, 19,013.17 and 7,810.23 is: 10,776.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,779.93 : 19,013.17 = 7,810.23 : x
  2. Step 2: Convert to fraction form
    13,779.93/19,013.17 = 7,810.23/x
  3. Step 3: Cross multiply
    13,779.93x = 19,013.17 × 7,810.23
  4. Step 4: Simplify right side
    13,779.93x = 148,497,230.73
  5. Step 5: Solve for x
    x = 148,497,230.73/13,779.93
  6. Step 6: Final answer
    x = 10,776.34

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Double scale
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Similar ratio
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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.