Home / 10,427.58-15,643.80-3,407.92

Finding the Fourth Proportional to 10,427.58, 15,643.80 and 3,407.92

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Solution

The fourth proportional to 10,427.58, 15,643.80 and 3,407.92 is: 5,112.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,427.58 : 15,643.80 = 3,407.92 : x
  2. Step 2: Convert to fraction form
    10,427.58/15,643.80 = 3,407.92/x
  3. Step 3: Cross multiply
    10,427.58x = 15,643.80 × 3,407.92
  4. Step 4: Simplify right side
    10,427.58x = 53,312,779.79
  5. Step 5: Solve for x
    x = 53,312,779.79/10,427.58
  6. Step 6: Final answer
    x = 5,112.67

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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.