Home / 30,587.32-42,210.92-18,486.15

Finding the Fourth Proportional to 30,587.32, 42,210.92 and 18,486.15

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Solution

The fourth proportional to 30,587.32, 42,210.92 and 18,486.15 is: 25,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,587.32 : 42,210.92 = 18,486.15 : x
  2. Step 2: Convert to fraction form
    30,587.32/42,210.92 = 18,486.15/x
  3. Step 3: Cross multiply
    30,587.32x = 42,210.92 × 18,486.15
  4. Step 4: Simplify right side
    30,587.32x = 780,317,405.40
  5. Step 5: Solve for x
    x = 780,317,405.40/30,587.32
  6. Step 6: Final answer
    x = 25,511.14

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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.