Home / 12,731.58-19,088.10-8,561.22

Finding the Fourth Proportional to 12,731.58, 19,088.10 and 8,561.22

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Solution

The fourth proportional to 12,731.58, 19,088.10 and 8,561.22 is: 12,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,731.58 : 19,088.10 = 8,561.22 : x
  2. Step 2: Convert to fraction form
    12,731.58/19,088.10 = 8,561.22/x
  3. Step 3: Cross multiply
    12,731.58x = 19,088.10 × 8,561.22
  4. Step 4: Simplify right side
    12,731.58x = 163,417,423.48
  5. Step 5: Solve for x
    x = 163,417,423.48/12,731.58
  6. Step 6: Final answer
    x = 12,835.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.