Home / 18,742.08-28,121.28-8,888.32

Finding the Fourth Proportional to 18,742.08, 28,121.28 and 8,888.32

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Solution

The fourth proportional to 18,742.08, 28,121.28 and 8,888.32 is: 13,336.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,742.08 : 28,121.28 = 8,888.32 : x
  2. Step 2: Convert to fraction form
    18,742.08/28,121.28 = 8,888.32/x
  3. Step 3: Cross multiply
    18,742.08x = 28,121.28 × 8,888.32
  4. Step 4: Simplify right side
    18,742.08x = 249,950,935.45
  5. Step 5: Solve for x
    x = 249,950,935.45/18,742.08
  6. Step 6: Final answer
    x = 13,336.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.