Home / 28,264.93-39,003.65-15,688.69

Finding the Fourth Proportional to 28,264.93, 39,003.65 and 15,688.69

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Solution

The fourth proportional to 28,264.93, 39,003.65 and 15,688.69 is: 21,649.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,264.93 : 39,003.65 = 15,688.69 : x
  2. Step 2: Convert to fraction form
    28,264.93/39,003.65 = 15,688.69/x
  3. Step 3: Cross multiply
    28,264.93x = 39,003.65 × 15,688.69
  4. Step 4: Simplify right side
    28,264.93x = 611,916,173.72
  5. Step 5: Solve for x
    x = 611,916,173.72/28,264.93
  6. Step 6: Final answer
    x = 21,649.31

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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.