Home / 28,109.93-42,164.90-9,386.51

Finding the Fourth Proportional to 28,109.93, 42,164.90 and 9,386.51

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Solution

The fourth proportional to 28,109.93, 42,164.90 and 9,386.51 is: 14,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,109.93 : 42,164.90 = 9,386.51 : x
  2. Step 2: Convert to fraction form
    28,109.93/42,164.90 = 9,386.51/x
  3. Step 3: Cross multiply
    28,109.93x = 42,164.90 × 9,386.51
  4. Step 4: Simplify right side
    28,109.93x = 395,781,208.57
  5. Step 5: Solve for x
    x = 395,781,208.57/28,109.93
  6. Step 6: Final answer
    x = 14,079.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.