Home / 15,148.76-20,894.58-12,316.12

Finding the Fourth Proportional to 15,148.76, 20,894.58 and 12,316.12

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Solution

The fourth proportional to 15,148.76, 20,894.58 and 12,316.12 is: 16,987.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.76 : 20,894.58 = 12,316.12 : x
  2. Step 2: Convert to fraction form
    15,148.76/20,894.58 = 12,316.12/x
  3. Step 3: Cross multiply
    15,148.76x = 20,894.58 × 12,316.12
  4. Step 4: Simplify right side
    15,148.76x = 257,340,102.39
  5. Step 5: Solve for x
    x = 257,340,102.39/15,148.76
  6. Step 6: Final answer
    x = 16,987.54

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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.