Home / 38,740.43-53,457.69-21,746.55

Finding the Fourth Proportional to 38,740.43, 53,457.69 and 21,746.55

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Solution

The fourth proportional to 38,740.43, 53,457.69 and 21,746.55 is: 30,007.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,740.43 : 53,457.69 = 21,746.55 : x
  2. Step 2: Convert to fraction form
    38,740.43/53,457.69 = 21,746.55/x
  3. Step 3: Cross multiply
    38,740.43x = 53,457.69 × 21,746.55
  4. Step 4: Simplify right side
    38,740.43x = 1,162,519,979.63
  5. Step 5: Solve for x
    x = 1,162,519,979.63/38,740.43
  6. Step 6: Final answer
    x = 30,007.93

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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.