Home / 38,385.16-52,970.68-21,389.33

Finding the Fourth Proportional to 38,385.16, 52,970.68 and 21,389.33

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Solution

The fourth proportional to 38,385.16, 52,970.68 and 21,389.33 is: 29,516.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,385.16 : 52,970.68 = 21,389.33 : x
  2. Step 2: Convert to fraction form
    38,385.16/52,970.68 = 21,389.33/x
  3. Step 3: Cross multiply
    38,385.16x = 52,970.68 × 21,389.33
  4. Step 4: Simplify right side
    38,385.16x = 1,133,007,354.84
  5. Step 5: Solve for x
    x = 1,133,007,354.84/38,385.16
  6. Step 6: Final answer
    x = 29,516.81

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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.