Home / 39,730.40-54,828.02-21,826.56

Finding the Fourth Proportional to 39,730.40, 54,828.02 and 21,826.56

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Solution

The fourth proportional to 39,730.40, 54,828.02 and 21,826.56 is: 30,120.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,730.40 : 54,828.02 = 21,826.56 : x
  2. Step 2: Convert to fraction form
    39,730.40/54,828.02 = 21,826.56/x
  3. Step 3: Cross multiply
    39,730.40x = 54,828.02 × 21,826.56
  4. Step 4: Simplify right side
    39,730.40x = 1,196,707,068.21
  5. Step 5: Solve for x
    x = 1,196,707,068.21/39,730.40
  6. Step 6: Final answer
    x = 30,120.69

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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.