Home / 28,004.50-38,647.29-15,430.06

Finding the Fourth Proportional to 28,004.50, 38,647.29 and 15,430.06

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Solution

The fourth proportional to 28,004.50, 38,647.29 and 15,430.06 is: 21,294.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,004.50 : 38,647.29 = 15,430.06 : x
  2. Step 2: Convert to fraction form
    28,004.50/38,647.29 = 15,430.06/x
  3. Step 3: Cross multiply
    28,004.50x = 38,647.29 × 15,430.06
  4. Step 4: Simplify right side
    28,004.50x = 596,330,003.54
  5. Step 5: Solve for x
    x = 596,330,003.54/28,004.50
  6. Step 6: Final answer
    x = 21,294.08

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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.