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Finding the Fourth Proportional to 12,378.65, 18,570.86 and 4,058.15

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Solution

The fourth proportional to 12,378.65, 18,570.86 and 4,058.15 is: 6,088.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.65 : 18,570.86 = 4,058.15 : x
  2. Step 2: Convert to fraction form
    12,378.65/18,570.86 = 4,058.15/x
  3. Step 3: Cross multiply
    12,378.65x = 18,570.86 × 4,058.15
  4. Step 4: Simplify right side
    12,378.65x = 75,363,335.51
  5. Step 5: Solve for x
    x = 75,363,335.51/12,378.65
  6. Step 6: Final answer
    x = 6,088.17

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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.