Home / 28,605.60-42,898.20-11,956.84

Finding the Fourth Proportional to 28,605.60, 42,898.20 and 11,956.84

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Solution

The fourth proportional to 28,605.60, 42,898.20 and 11,956.84 is: 17,931.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,605.60 : 42,898.20 = 11,956.84 : x
  2. Step 2: Convert to fraction form
    28,605.60/42,898.20 = 11,956.84/x
  3. Step 3: Cross multiply
    28,605.60x = 42,898.20 × 11,956.84
  4. Step 4: Simplify right side
    28,605.60x = 512,926,913.69
  5. Step 5: Solve for x
    x = 512,926,913.69/28,605.60
  6. Step 6: Final answer
    x = 17,931.00

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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.