Home / 13,730.04-18,946.71-7,761.36

Finding the Fourth Proportional to 13,730.04, 18,946.71 and 7,761.36

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Solution

The fourth proportional to 13,730.04, 18,946.71 and 7,761.36 is: 10,710.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,730.04 : 18,946.71 = 7,761.36 : x
  2. Step 2: Convert to fraction form
    13,730.04/18,946.71 = 7,761.36/x
  3. Step 3: Cross multiply
    13,730.04x = 18,946.71 × 7,761.36
  4. Step 4: Simplify right side
    13,730.04x = 147,052,237.13
  5. Step 5: Solve for x
    x = 147,052,237.13/13,730.04
  6. Step 6: Final answer
    x = 10,710.26

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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.