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Finding the Fourth Proportional to 39,411, 59,088.66 and 18,328.74

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Solution

The fourth proportional to 39,411, 59,088.66 and 18,328.74 is: 27,480.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,411 : 59,088.66 = 18,328.74 : x
  2. Step 2: Convert to fraction form
    39,411/59,088.66 = 18,328.74/x
  3. Step 3: Cross multiply
    39,411x = 59,088.66 × 18,328.74
  4. Step 4: Simplify right side
    39,411x = 1,083,020,686.09
  5. Step 5: Solve for x
    x = 1,083,020,686.09/39,411
  6. Step 6: Final answer
    x = 27,480.16

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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.