Home / 15,271.04-21,076.80-8,898.68

Finding the Fourth Proportional to 15,271.04, 21,076.80 and 8,898.68

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Solution

The fourth proportional to 15,271.04, 21,076.80 and 8,898.68 is: 12,281.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,271.04 : 21,076.80 = 8,898.68 : x
  2. Step 2: Convert to fraction form
    15,271.04/21,076.80 = 8,898.68/x
  3. Step 3: Cross multiply
    15,271.04x = 21,076.80 × 8,898.68
  4. Step 4: Simplify right side
    15,271.04x = 187,555,698.62
  5. Step 5: Solve for x
    x = 187,555,698.62/15,271.04
  6. Step 6: Final answer
    x = 12,281.79

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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.