Home / 14,165.89-21,248.70-8,620.81

Finding the Fourth Proportional to 14,165.89, 21,248.70 and 8,620.81

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Solution

The fourth proportional to 14,165.89, 21,248.70 and 8,620.81 is: 12,931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,165.89 : 21,248.70 = 8,620.81 : x
  2. Step 2: Convert to fraction form
    14,165.89/21,248.70 = 8,620.81/x
  3. Step 3: Cross multiply
    14,165.89x = 21,248.70 × 8,620.81
  4. Step 4: Simplify right side
    14,165.89x = 183,181,005.45
  5. Step 5: Solve for x
    x = 183,181,005.45/14,165.89
  6. Step 6: Final answer
    x = 12,931.13

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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.