Home / 28,115.19-38,798.93-15,539.94

Finding the Fourth Proportional to 28,115.19, 38,798.93 and 15,539.94

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Solution

The fourth proportional to 28,115.19, 38,798.93 and 15,539.94 is: 21,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,115.19 : 38,798.93 = 15,539.94 : x
  2. Step 2: Convert to fraction form
    28,115.19/38,798.93 = 15,539.94/x
  3. Step 3: Cross multiply
    28,115.19x = 38,798.93 × 15,539.94
  4. Step 4: Simplify right side
    28,115.19x = 602,932,966.56
  5. Step 5: Solve for x
    x = 602,932,966.56/28,115.19
  6. Step 6: Final answer
    x = 21,445.10

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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.