Home / 18,869.02-28,307.46-7,776.52

Finding the Fourth Proportional to 18,869.02, 28,307.46 and 7,776.52

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Solution

The fourth proportional to 18,869.02, 28,307.46 and 7,776.52 is: 11,666.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,869.02 : 28,307.46 = 7,776.52 : x
  2. Step 2: Convert to fraction form
    18,869.02/28,307.46 = 7,776.52/x
  3. Step 3: Cross multiply
    18,869.02x = 28,307.46 × 7,776.52
  4. Step 4: Simplify right side
    18,869.02x = 220,133,528.84
  5. Step 5: Solve for x
    x = 220,133,528.84/18,869.02
  6. Step 6: Final answer
    x = 11,666.40

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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.