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Finding the Fourth Proportional to 19,621.60, 29,432.40 and 19,362.40

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Solution

The fourth proportional to 19,621.60, 29,432.40 and 19,362.40 is: 29,043.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,621.60 : 29,432.40 = 19,362.40 : x
  2. Step 2: Convert to fraction form
    19,621.60/29,432.40 = 19,362.40/x
  3. Step 3: Cross multiply
    19,621.60x = 29,432.40 × 19,362.40
  4. Step 4: Simplify right side
    19,621.60x = 569,881,901.76
  5. Step 5: Solve for x
    x = 569,881,901.76/19,621.60
  6. Step 6: Final answer
    x = 29,043.60

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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.