Home / 13,754.30-18,980.37-7,787.19

Finding the Fourth Proportional to 13,754.30, 18,980.37 and 7,787.19

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Solution

The fourth proportional to 13,754.30, 18,980.37 and 7,787.19 is: 10,746.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,754.30 : 18,980.37 = 7,787.19 : x
  2. Step 2: Convert to fraction form
    13,754.30/18,980.37 = 7,787.19/x
  3. Step 3: Cross multiply
    13,754.30x = 18,980.37 × 7,787.19
  4. Step 4: Simplify right side
    13,754.30x = 147,803,747.46
  5. Step 5: Solve for x
    x = 147,803,747.46/13,754.30
  6. Step 6: Final answer
    x = 10,746.01

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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.