Home / 42,009.76-63,026.93-12,428.38

Finding the Fourth Proportional to 42,009.76, 63,026.93 and 12,428.38

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Solution

The fourth proportional to 42,009.76, 63,026.93 and 12,428.38 is: 18,646.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,009.76 : 63,026.93 = 12,428.38 : x
  2. Step 2: Convert to fraction form
    42,009.76/63,026.93 = 12,428.38/x
  3. Step 3: Cross multiply
    42,009.76x = 63,026.93 × 12,428.38
  4. Step 4: Simplify right side
    42,009.76x = 783,322,636.27
  5. Step 5: Solve for x
    x = 783,322,636.27/42,009.76
  6. Step 6: Final answer
    x = 18,646.21

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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.