Home / 38,688.78-53,420.67-29,722.08

Finding the Fourth Proportional to 38,688.78, 53,420.67 and 29,722.08

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Solution

The fourth proportional to 38,688.78, 53,420.67 and 29,722.08 is: 41,039.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,688.78 : 53,420.67 = 29,722.08 : x
  2. Step 2: Convert to fraction form
    38,688.78/53,420.67 = 29,722.08/x
  3. Step 3: Cross multiply
    38,688.78x = 53,420.67 × 29,722.08
  4. Step 4: Simplify right side
    38,688.78x = 1,587,773,427.39
  5. Step 5: Solve for x
    x = 1,587,773,427.39/38,688.78
  6. Step 6: Final answer
    x = 41,039.64

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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.