Home / 13,790.70-19,035.36-13,085.28

Finding the Fourth Proportional to 13,790.70, 19,035.36 and 13,085.28

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Solution

The fourth proportional to 13,790.70, 19,035.36 and 13,085.28 is: 18,061.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.70 : 19,035.36 = 13,085.28 : x
  2. Step 2: Convert to fraction form
    13,790.70/19,035.36 = 13,085.28/x
  3. Step 3: Cross multiply
    13,790.70x = 19,035.36 × 13,085.28
  4. Step 4: Simplify right side
    13,790.70x = 249,083,015.50
  5. Step 5: Solve for x
    x = 249,083,015.50/13,790.70
  6. Step 6: Final answer
    x = 18,061.67

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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.