Home / 28,317.70-39,079.28-15,570.23

Finding the Fourth Proportional to 28,317.70, 39,079.28 and 15,570.23

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Solution

The fourth proportional to 28,317.70, 39,079.28 and 15,570.23 is: 21,487.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,317.70 : 39,079.28 = 15,570.23 : x
  2. Step 2: Convert to fraction form
    28,317.70/39,079.28 = 15,570.23/x
  3. Step 3: Cross multiply
    28,317.70x = 39,079.28 × 15,570.23
  4. Step 4: Simplify right side
    28,317.70x = 608,473,104.59
  5. Step 5: Solve for x
    x = 608,473,104.59/28,317.70
  6. Step 6: Final answer
    x = 21,487.38

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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.