Home / 28,290.89-39,041.27-15,370.05

Finding the Fourth Proportional to 28,290.89, 39,041.27 and 15,370.05

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Solution

The fourth proportional to 28,290.89, 39,041.27 and 15,370.05 is: 21,210.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,290.89 : 39,041.27 = 15,370.05 : x
  2. Step 2: Convert to fraction form
    28,290.89/39,041.27 = 15,370.05/x
  3. Step 3: Cross multiply
    28,290.89x = 39,041.27 × 15,370.05
  4. Step 4: Simplify right side
    28,290.89x = 600,066,195.11
  5. Step 5: Solve for x
    x = 600,066,195.11/28,290.89
  6. Step 6: Final answer
    x = 21,210.58

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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.