Home / 15,120.40-22,680.60-4,590.40

Finding the Fourth Proportional to 15,120.40, 22,680.60 and 4,590.40

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Solution

The fourth proportional to 15,120.40, 22,680.60 and 4,590.40 is: 6,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,120.40 : 22,680.60 = 4,590.40 : x
  2. Step 2: Convert to fraction form
    15,120.40/22,680.60 = 4,590.40/x
  3. Step 3: Cross multiply
    15,120.40x = 22,680.60 × 4,590.40
  4. Step 4: Simplify right side
    15,120.40x = 104,113,026.24
  5. Step 5: Solve for x
    x = 104,113,026.24/15,120.40
  6. Step 6: Final answer
    x = 6,885.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.