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Finding the Fourth Proportional to 17,987.38, 26,980.98 and 4,838.68

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Solution

The fourth proportional to 17,987.38, 26,980.98 and 4,838.68 is: 7,258.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,987.38 : 26,980.98 = 4,838.68 : x
  2. Step 2: Convert to fraction form
    17,987.38/26,980.98 = 4,838.68/x
  3. Step 3: Cross multiply
    17,987.38x = 26,980.98 × 4,838.68
  4. Step 4: Simplify right side
    17,987.38x = 130,552,328.31
  5. Step 5: Solve for x
    x = 130,552,328.31/17,987.38
  6. Step 6: Final answer
    x = 7,258.00

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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.