Home / 15,509.50-21,403.12-8,792.98

Finding the Fourth Proportional to 15,509.50, 21,403.12 and 8,792.98

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Solution

The fourth proportional to 15,509.50, 21,403.12 and 8,792.98 is: 12,134.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,509.50 : 21,403.12 = 8,792.98 : x
  2. Step 2: Convert to fraction form
    15,509.50/21,403.12 = 8,792.98/x
  3. Step 3: Cross multiply
    15,509.50x = 21,403.12 × 8,792.98
  4. Step 4: Simplify right side
    15,509.50x = 188,197,206.10
  5. Step 5: Solve for x
    x = 188,197,206.10/15,509.50
  6. Step 6: Final answer
    x = 12,134.32

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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.