Home / 12,420.47-18,638.40-5,024.99

Finding the Fourth Proportional to 12,420.47, 18,638.40 and 5,024.99

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Solution

The fourth proportional to 12,420.47, 18,638.40 and 5,024.99 is: 7,540.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,420.47 : 18,638.40 = 5,024.99 : x
  2. Step 2: Convert to fraction form
    12,420.47/18,638.40 = 5,024.99/x
  3. Step 3: Cross multiply
    12,420.47x = 18,638.40 × 5,024.99
  4. Step 4: Simplify right side
    12,420.47x = 93,657,734.21
  5. Step 5: Solve for x
    x = 93,657,734.21/12,420.47
  6. Step 6: Final answer
    x = 7,540.59

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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.