Home / 15,497.90-21,386.85-8,424.50

Finding the Fourth Proportional to 15,497.90, 21,386.85 and 8,424.50

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Solution

The fourth proportional to 15,497.90, 21,386.85 and 8,424.50 is: 11,625.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,497.90 : 21,386.85 = 8,424.50 : x
  2. Step 2: Convert to fraction form
    15,497.90/21,386.85 = 8,424.50/x
  3. Step 3: Cross multiply
    15,497.90x = 21,386.85 × 8,424.50
  4. Step 4: Simplify right side
    15,497.90x = 180,173,517.83
  5. Step 5: Solve for x
    x = 180,173,517.83/15,497.90
  6. Step 6: Final answer
    x = 11,625.67

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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.