Home / 38,990.39-58,493.48-12,688.07

Finding the Fourth Proportional to 38,990.39, 58,493.48 and 12,688.07

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Solution

The fourth proportional to 38,990.39, 58,493.48 and 12,688.07 is: 19,034.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,990.39 : 58,493.48 = 12,688.07 : x
  2. Step 2: Convert to fraction form
    38,990.39/58,493.48 = 12,688.07/x
  3. Step 3: Cross multiply
    38,990.39x = 58,493.48 × 12,688.07
  4. Step 4: Simplify right side
    38,990.39x = 742,169,012.88
  5. Step 5: Solve for x
    x = 742,169,012.88/38,990.39
  6. Step 6: Final answer
    x = 19,034.67

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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.