Home / 28,316.41-39,077.64-15,570.56

Finding the Fourth Proportional to 28,316.41, 39,077.64 and 15,570.56

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Solution

The fourth proportional to 28,316.41, 39,077.64 and 15,570.56 is: 21,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,316.41 : 39,077.64 = 15,570.56 : x
  2. Step 2: Convert to fraction form
    28,316.41/39,077.64 = 15,570.56/x
  3. Step 3: Cross multiply
    28,316.41x = 39,077.64 × 15,570.56
  4. Step 4: Simplify right side
    28,316.41x = 608,460,738.28
  5. Step 5: Solve for x
    x = 608,460,738.28/28,316.41
  6. Step 6: Final answer
    x = 21,487.92

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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.