Home / 19,145.60-28,672.32-12,970.88

Finding the Fourth Proportional to 19,145.60, 28,672.32 and 12,970.88

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Solution

The fourth proportional to 19,145.60, 28,672.32 and 12,970.88 is: 19,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,145.60 : 28,672.32 = 12,970.88 : x
  2. Step 2: Convert to fraction form
    19,145.60/28,672.32 = 12,970.88/x
  3. Step 3: Cross multiply
    19,145.60x = 28,672.32 × 12,970.88
  4. Step 4: Simplify right side
    19,145.60x = 371,905,222.04
  5. Step 5: Solve for x
    x = 371,905,222.04/19,145.60
  6. Step 6: Final answer
    x = 19,425.10

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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.