Home / 39,078.50-53,927.98-21,173.45

Finding the Fourth Proportional to 39,078.50, 53,927.98 and 21,173.45

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Solution

The fourth proportional to 39,078.50, 53,927.98 and 21,173.45 is: 29,219.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,078.50 : 53,927.98 = 21,173.45 : x
  2. Step 2: Convert to fraction form
    39,078.50/53,927.98 = 21,173.45/x
  3. Step 3: Cross multiply
    39,078.50x = 53,927.98 × 21,173.45
  4. Step 4: Simplify right side
    39,078.50x = 1,141,841,368.90
  5. Step 5: Solve for x
    x = 1,141,841,368.90/39,078.50
  6. Step 6: Final answer
    x = 29,219.17

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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.