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Finding the Fourth Proportional to 14,798.09, 20,420.51 and 8,829.71

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Solution

The fourth proportional to 14,798.09, 20,420.51 and 8,829.71 is: 12,184.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,798.09 : 20,420.51 = 8,829.71 : x
  2. Step 2: Convert to fraction form
    14,798.09/20,420.51 = 8,829.71/x
  3. Step 3: Cross multiply
    14,798.09x = 20,420.51 × 8,829.71
  4. Step 4: Simplify right side
    14,798.09x = 180,307,111.68
  5. Step 5: Solve for x
    x = 180,307,111.68/14,798.09
  6. Step 6: Final answer
    x = 12,184.48

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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.