Home / 15,497.21-21,386.28-8,423.63

Finding the Fourth Proportional to 15,497.21, 21,386.28 and 8,423.63

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Solution

The fourth proportional to 15,497.21, 21,386.28 and 8,423.63 is: 11,624.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.21 : 21,386.28 = 8,423.63 : x
  2. Step 2: Convert to fraction form
    15,497.21/21,386.28 = 8,423.63/x
  3. Step 3: Cross multiply
    15,497.21x = 21,386.28 × 8,423.63
  4. Step 4: Simplify right side
    15,497.21x = 180,150,109.80
  5. Step 5: Solve for x
    x = 180,150,109.80/15,497.21
  6. Step 6: Final answer
    x = 11,624.68

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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.