Home / 42,678.54-64,006.74-12,685.73

Finding the Fourth Proportional to 42,678.54, 64,006.74 and 12,685.73

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Solution

The fourth proportional to 42,678.54, 64,006.74 and 12,685.73 is: 19,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,678.54 : 64,006.74 = 12,685.73 : x
  2. Step 2: Convert to fraction form
    42,678.54/64,006.74 = 12,685.73/x
  3. Step 3: Cross multiply
    42,678.54x = 64,006.74 × 12,685.73
  4. Step 4: Simplify right side
    42,678.54x = 811,971,901.79
  5. Step 5: Solve for x
    x = 811,971,901.79/42,678.54
  6. Step 6: Final answer
    x = 19,025.30

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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.