Home / 13,653.08-18,837.48-7,684.40

Finding the Fourth Proportional to 13,653.08, 18,837.48 and 7,684.40

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Solution

The fourth proportional to 13,653.08, 18,837.48 and 7,684.40 is: 10,602.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,653.08 : 18,837.48 = 7,684.40 : x
  2. Step 2: Convert to fraction form
    13,653.08/18,837.48 = 7,684.40/x
  3. Step 3: Cross multiply
    13,653.08x = 18,837.48 × 7,684.40
  4. Step 4: Simplify right side
    13,653.08x = 144,754,731.31
  5. Step 5: Solve for x
    x = 144,754,731.31/13,653.08
  6. Step 6: Final answer
    x = 10,602.35

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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.