Home / 13,730.85-18,948.90-7,762.88

Finding the Fourth Proportional to 13,730.85, 18,948.90 and 7,762.88

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Solution

The fourth proportional to 13,730.85, 18,948.90 and 7,762.88 is: 10,712.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.85 : 18,948.90 = 7,762.88 : x
  2. Step 2: Convert to fraction form
    13,730.85/18,948.90 = 7,762.88/x
  3. Step 3: Cross multiply
    13,730.85x = 18,948.90 × 7,762.88
  4. Step 4: Simplify right side
    13,730.85x = 147,098,036.83
  5. Step 5: Solve for x
    x = 147,098,036.83/13,730.85
  6. Step 6: Final answer
    x = 10,712.96

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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.