Home / 30,492.89-42,081.50-18,853.67

Finding the Fourth Proportional to 30,492.89, 42,081.50 and 18,853.67

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Solution

The fourth proportional to 30,492.89, 42,081.50 and 18,853.67 is: 26,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,492.89 : 42,081.50 = 18,853.67 : x
  2. Step 2: Convert to fraction form
    30,492.89/42,081.50 = 18,853.67/x
  3. Step 3: Cross multiply
    30,492.89x = 42,081.50 × 18,853.67
  4. Step 4: Simplify right side
    30,492.89x = 793,390,550.83
  5. Step 5: Solve for x
    x = 793,390,550.83/30,492.89
  6. Step 6: Final answer
    x = 26,018.87

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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.