Home / 13,015.65-19,531.50-5,116.77

Finding the Fourth Proportional to 13,015.65, 19,531.50 and 5,116.77

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Solution

The fourth proportional to 13,015.65, 19,531.50 and 5,116.77 is: 7,678.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,015.65 : 19,531.50 = 5,116.77 : x
  2. Step 2: Convert to fraction form
    13,015.65/19,531.50 = 5,116.77/x
  3. Step 3: Cross multiply
    13,015.65x = 19,531.50 × 5,116.77
  4. Step 4: Simplify right side
    13,015.65x = 99,938,193.26
  5. Step 5: Solve for x
    x = 99,938,193.26/13,015.65
  6. Step 6: Final answer
    x = 7,678.31

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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.