Home / 19,118.86-28,678.75-9,256.30

Finding the Fourth Proportional to 19,118.86, 28,678.75 and 9,256.30

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Solution

The fourth proportional to 19,118.86, 28,678.75 and 9,256.30 is: 13,884.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,118.86 : 28,678.75 = 9,256.30 : x
  2. Step 2: Convert to fraction form
    19,118.86/28,678.75 = 9,256.30/x
  3. Step 3: Cross multiply
    19,118.86x = 28,678.75 × 9,256.30
  4. Step 4: Simplify right side
    19,118.86x = 265,459,113.63
  5. Step 5: Solve for x
    x = 265,459,113.63/19,118.86
  6. Step 6: Final answer
    x = 13,884.67

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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.