Home / 28,115.02-38,798.22-15,539.50

Finding the Fourth Proportional to 28,115.02, 38,798.22 and 15,539.50

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Solution

The fourth proportional to 28,115.02, 38,798.22 and 15,539.50 is: 21,444.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.02 : 38,798.22 = 15,539.50 : x
  2. Step 2: Convert to fraction form
    28,115.02/38,798.22 = 15,539.50/x
  3. Step 3: Cross multiply
    28,115.02x = 38,798.22 × 15,539.50
  4. Step 4: Simplify right side
    28,115.02x = 602,904,939.69
  5. Step 5: Solve for x
    x = 602,904,939.69/28,115.02
  6. Step 6: Final answer
    x = 21,444.23

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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.