Home / 13,376.76-18,459.36-8,070.36

Finding the Fourth Proportional to 13,376.76, 18,459.36 and 8,070.36

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Solution

The fourth proportional to 13,376.76, 18,459.36 and 8,070.36 is: 11,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,376.76 : 18,459.36 = 8,070.36 : x
  2. Step 2: Convert to fraction form
    13,376.76/18,459.36 = 8,070.36/x
  3. Step 3: Cross multiply
    13,376.76x = 18,459.36 × 8,070.36
  4. Step 4: Simplify right side
    13,376.76x = 148,973,680.57
  5. Step 5: Solve for x
    x = 148,973,680.57/13,376.76
  6. Step 6: Final answer
    x = 11,136.75

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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.