Home / 13,395.25-18,483.64-7,730.16

Finding the Fourth Proportional to 13,395.25, 18,483.64 and 7,730.16

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Solution

The fourth proportional to 13,395.25, 18,483.64 and 7,730.16 is: 10,666.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,395.25 : 18,483.64 = 7,730.16 : x
  2. Step 2: Convert to fraction form
    13,395.25/18,483.64 = 7,730.16/x
  3. Step 3: Cross multiply
    13,395.25x = 18,483.64 × 7,730.16
  4. Step 4: Simplify right side
    13,395.25x = 142,881,494.58
  5. Step 5: Solve for x
    x = 142,881,494.58/13,395.25
  6. Step 6: Final answer
    x = 10,666.58

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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.