Home / 13,730.50-18,948.18-7,442.92

Finding the Fourth Proportional to 13,730.50, 18,948.18 and 7,442.92

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Solution

The fourth proportional to 13,730.50, 18,948.18 and 7,442.92 is: 10,271.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.50 : 18,948.18 = 7,442.92 : x
  2. Step 2: Convert to fraction form
    13,730.50/18,948.18 = 7,442.92/x
  3. Step 3: Cross multiply
    13,730.50x = 18,948.18 × 7,442.92
  4. Step 4: Simplify right side
    13,730.50x = 141,029,787.89
  5. Step 5: Solve for x
    x = 141,029,787.89/13,730.50
  6. Step 6: Final answer
    x = 10,271.28

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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.