Home / 18,689.12-25,788.36-10,730.08

Finding the Fourth Proportional to 18,689.12, 25,788.36 and 10,730.08

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Solution

The fourth proportional to 18,689.12, 25,788.36 and 10,730.08 is: 14,806.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,689.12 : 25,788.36 = 10,730.08 : x
  2. Step 2: Convert to fraction form
    18,689.12/25,788.36 = 10,730.08/x
  3. Step 3: Cross multiply
    18,689.12x = 25,788.36 × 10,730.08
  4. Step 4: Simplify right side
    18,689.12x = 276,711,165.87
  5. Step 5: Solve for x
    x = 276,711,165.87/18,689.12
  6. Step 6: Final answer
    x = 14,806.00

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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.