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Finding the Fourth Proportional to 14,869.51, 20,518.48 and 8,901.05

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Solution

The fourth proportional to 14,869.51, 20,518.48 and 8,901.05 is: 12,282.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,869.51 : 20,518.48 = 8,901.05 : x
  2. Step 2: Convert to fraction form
    14,869.51/20,518.48 = 8,901.05/x
  3. Step 3: Cross multiply
    14,869.51x = 20,518.48 × 8,901.05
  4. Step 4: Simplify right side
    14,869.51x = 182,635,913.81
  5. Step 5: Solve for x
    x = 182,635,913.81/14,869.51
  6. Step 6: Final answer
    x = 12,282.58

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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.