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Finding the Fourth Proportional to 38,937.51, 58,409.10 and 13,980.60

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Solution

The fourth proportional to 38,937.51, 58,409.10 and 13,980.60 is: 20,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,937.51 : 58,409.10 = 13,980.60 : x
  2. Step 2: Convert to fraction form
    38,937.51/58,409.10 = 13,980.60/x
  3. Step 3: Cross multiply
    38,937.51x = 58,409.10 × 13,980.60
  4. Step 4: Simplify right side
    38,937.51x = 816,594,263.46
  5. Step 5: Solve for x
    x = 816,594,263.46/38,937.51
  6. Step 6: Final answer
    x = 20,971.92

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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.