Home / 38,717.09-53,435.81-21,955.49

Finding the Fourth Proportional to 38,717.09, 53,435.81 and 21,955.49

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Solution

The fourth proportional to 38,717.09, 53,435.81 and 21,955.49 is: 30,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,717.09 : 53,435.81 = 21,955.49 : x
  2. Step 2: Convert to fraction form
    38,717.09/53,435.81 = 21,955.49/x
  3. Step 3: Cross multiply
    38,717.09x = 53,435.81 × 21,955.49
  4. Step 4: Simplify right side
    38,717.09x = 1,173,209,282.32
  5. Step 5: Solve for x
    x = 1,173,209,282.32/38,717.09
  6. Step 6: Final answer
    x = 30,302.10

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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.