Home / 13,743.40-18,966.81-7,775.32

Finding the Fourth Proportional to 13,743.40, 18,966.81 and 7,775.32

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Solution

The fourth proportional to 13,743.40, 18,966.81 and 7,775.32 is: 10,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.40 : 18,966.81 = 7,775.32 : x
  2. Step 2: Convert to fraction form
    13,743.40/18,966.81 = 7,775.32/x
  3. Step 3: Cross multiply
    13,743.40x = 18,966.81 × 7,775.32
  4. Step 4: Simplify right side
    13,743.40x = 147,473,017.13
  5. Step 5: Solve for x
    x = 147,473,017.13/13,743.40
  6. Step 6: Final answer
    x = 10,730.46

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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.