Home / 28,746.05-39,658.52-21,210.36

Finding the Fourth Proportional to 28,746.05, 39,658.52 and 21,210.36

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Solution

The fourth proportional to 28,746.05, 39,658.52 and 21,210.36 is: 29,262.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746.05 : 39,658.52 = 21,210.36 : x
  2. Step 2: Convert to fraction form
    28,746.05/39,658.52 = 21,210.36/x
  3. Step 3: Cross multiply
    28,746.05x = 39,658.52 × 21,210.36
  4. Step 4: Simplify right side
    28,746.05x = 841,171,380.22
  5. Step 5: Solve for x
    x = 841,171,380.22/28,746.05
  6. Step 6: Final answer
    x = 29,262.16

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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.