Home / 28,451.90-39,263.62-15,705.08

Finding the Fourth Proportional to 28,451.90, 39,263.62 and 15,705.08

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Solution

The fourth proportional to 28,451.90, 39,263.62 and 15,705.08 is: 21,673.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,451.90 : 39,263.62 = 15,705.08 : x
  2. Step 2: Convert to fraction form
    28,451.90/39,263.62 = 15,705.08/x
  3. Step 3: Cross multiply
    28,451.90x = 39,263.62 × 15,705.08
  4. Step 4: Simplify right side
    28,451.90x = 616,638,293.19
  5. Step 5: Solve for x
    x = 616,638,293.19/28,451.90
  6. Step 6: Final answer
    x = 21,673.01

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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.