Home / 28,423.83-39,218.90-20,483.67

Finding the Fourth Proportional to 28,423.83, 39,218.90 and 20,483.67

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Solution

The fourth proportional to 28,423.83, 39,218.90 and 20,483.67 is: 28,263.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,423.83 : 39,218.90 = 20,483.67 : x
  2. Step 2: Convert to fraction form
    28,423.83/39,218.90 = 20,483.67/x
  3. Step 3: Cross multiply
    28,423.83x = 39,218.90 × 20,483.67
  4. Step 4: Simplify right side
    28,423.83x = 803,346,902.94
  5. Step 5: Solve for x
    x = 803,346,902.94/28,423.83
  6. Step 6: Final answer
    x = 28,263.15

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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.