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Finding the Fourth Proportional to 14,798.10, 20,420.88 and 8,826.72

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Solution

The fourth proportional to 14,798.10, 20,420.88 and 8,826.72 is: 12,180.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,798.10 : 20,420.88 = 8,826.72 : x
  2. Step 2: Convert to fraction form
    14,798.10/20,420.88 = 8,826.72/x
  3. Step 3: Cross multiply
    14,798.10x = 20,420.88 × 8,826.72
  4. Step 4: Simplify right side
    14,798.10x = 180,249,389.91
  5. Step 5: Solve for x
    x = 180,249,389.91/14,798.10
  6. Step 6: Final answer
    x = 12,180.58

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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.