Home / 13,394.70-18,430.35-10,995.85

Finding the Fourth Proportional to 13,394.70, 18,430.35 and 10,995.85

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Solution

The fourth proportional to 13,394.70, 18,430.35 and 10,995.85 is: 15,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,394.70 : 18,430.35 = 10,995.85 : x
  2. Step 2: Convert to fraction form
    13,394.70/18,430.35 = 10,995.85/x
  3. Step 3: Cross multiply
    13,394.70x = 18,430.35 × 10,995.85
  4. Step 4: Simplify right side
    13,394.70x = 202,657,271.90
  5. Step 5: Solve for x
    x = 202,657,271.90/13,394.70
  6. Step 6: Final answer
    x = 15,129.67

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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.