Home / 28,121.18-38,807.33-15,374.16

Finding the Fourth Proportional to 28,121.18, 38,807.33 and 15,374.16

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Solution

The fourth proportional to 28,121.18, 38,807.33 and 15,374.16 is: 21,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.18 : 38,807.33 = 15,374.16 : x
  2. Step 2: Convert to fraction form
    28,121.18/38,807.33 = 15,374.16/x
  3. Step 3: Cross multiply
    28,121.18x = 38,807.33 × 15,374.16
  4. Step 4: Simplify right side
    28,121.18x = 596,630,023.72
  5. Step 5: Solve for x
    x = 596,630,023.72/28,121.18
  6. Step 6: Final answer
    x = 21,216.40

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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.