Home / 28,418.55-42,618.60-13,423.35

Finding the Fourth Proportional to 28,418.55, 42,618.60 and 13,423.35

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Solution

The fourth proportional to 28,418.55, 42,618.60 and 13,423.35 is: 20,130.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,418.55 : 42,618.60 = 13,423.35 : x
  2. Step 2: Convert to fraction form
    28,418.55/42,618.60 = 13,423.35/x
  3. Step 3: Cross multiply
    28,418.55x = 42,618.60 × 13,423.35
  4. Step 4: Simplify right side
    28,418.55x = 572,084,384.31
  5. Step 5: Solve for x
    x = 572,084,384.31/28,418.55
  6. Step 6: Final answer
    x = 20,130.67

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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.