Home / 15,888.16-21,925.38-8,814.46

Finding the Fourth Proportional to 15,888.16, 21,925.38 and 8,814.46

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Solution

The fourth proportional to 15,888.16, 21,925.38 and 8,814.46 is: 12,163.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,888.16 : 21,925.38 = 8,814.46 : x
  2. Step 2: Convert to fraction form
    15,888.16/21,925.38 = 8,814.46/x
  3. Step 3: Cross multiply
    15,888.16x = 21,925.38 × 8,814.46
  4. Step 4: Simplify right side
    15,888.16x = 193,260,384.99
  5. Step 5: Solve for x
    x = 193,260,384.99/15,888.16
  6. Step 6: Final answer
    x = 12,163.80

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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.