Home / 15,345.03-21,178.02-8,630.94

Finding the Fourth Proportional to 15,345.03, 21,178.02 and 8,630.94

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Solution

The fourth proportional to 15,345.03, 21,178.02 and 8,630.94 is: 11,911.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,345.03 : 21,178.02 = 8,630.94 : x
  2. Step 2: Convert to fraction form
    15,345.03/21,178.02 = 8,630.94/x
  3. Step 3: Cross multiply
    15,345.03x = 21,178.02 × 8,630.94
  4. Step 4: Simplify right side
    15,345.03x = 182,786,219.94
  5. Step 5: Solve for x
    x = 182,786,219.94/15,345.03
  6. Step 6: Final answer
    x = 11,911.75

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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.