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Finding the Fourth Proportional to 19,346.76, 28,970.64 and 12,752.76

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Solution

The fourth proportional to 19,346.76, 28,970.64 and 12,752.76 is: 19,096.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,346.76 : 28,970.64 = 12,752.76 : x
  2. Step 2: Convert to fraction form
    19,346.76/28,970.64 = 12,752.76/x
  3. Step 3: Cross multiply
    19,346.76x = 28,970.64 × 12,752.76
  4. Step 4: Simplify right side
    19,346.76x = 369,455,618.97
  5. Step 5: Solve for x
    x = 369,455,618.97/19,346.76
  6. Step 6: Final answer
    x = 19,096.51

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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.