Home / 28,119.12-42,184.36-12,536.76

Finding the Fourth Proportional to 28,119.12, 42,184.36 and 12,536.76

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Solution

The fourth proportional to 28,119.12, 42,184.36 and 12,536.76 is: 18,807.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,119.12 : 42,184.36 = 12,536.76 : x
  2. Step 2: Convert to fraction form
    28,119.12/42,184.36 = 12,536.76/x
  3. Step 3: Cross multiply
    28,119.12x = 42,184.36 × 12,536.76
  4. Step 4: Simplify right side
    28,119.12x = 528,855,197.07
  5. Step 5: Solve for x
    x = 528,855,197.07/28,119.12
  6. Step 6: Final answer
    x = 18,807.67

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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.