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Finding the Fourth Proportional to 14,807.70, 20,420.49 and 9,695.59

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Solution

The fourth proportional to 14,807.70, 20,420.49 and 9,695.59 is: 13,370.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,807.70 : 20,420.49 = 9,695.59 : x
  2. Step 2: Convert to fraction form
    14,807.70/20,420.49 = 9,695.59/x
  3. Step 3: Cross multiply
    14,807.70x = 20,420.49 × 9,695.59
  4. Step 4: Simplify right side
    14,807.70x = 197,988,629.41
  5. Step 5: Solve for x
    x = 197,988,629.41/14,807.70
  6. Step 6: Final answer
    x = 13,370.65

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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.