Home / 38,874.06-53,636.70-21,875

Finding the Fourth Proportional to 38,874.06, 53,636.70 and 21,875

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Solution

The fourth proportional to 38,874.06, 53,636.70 and 21,875 is: 30,182.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,874.06 : 53,636.70 = 21,875 : x
  2. Step 2: Convert to fraction form
    38,874.06/53,636.70 = 21,875/x
  3. Step 3: Cross multiply
    38,874.06x = 53,636.70 × 21,875
  4. Step 4: Simplify right side
    38,874.06x = 1,173,302,812.50
  5. Step 5: Solve for x
    x = 1,173,302,812.50/38,874.06
  6. Step 6: Final answer
    x = 30,182.15

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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.