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Finding the Fourth Proportional to 42,603.32, 63,904.98 and 13,019.56

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Solution

The fourth proportional to 42,603.32, 63,904.98 and 13,019.56 is: 19,529.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,603.32 : 63,904.98 = 13,019.56 : x
  2. Step 2: Convert to fraction form
    42,603.32/63,904.98 = 13,019.56/x
  3. Step 3: Cross multiply
    42,603.32x = 63,904.98 × 13,019.56
  4. Step 4: Simplify right side
    42,603.32x = 832,014,721.41
  5. Step 5: Solve for x
    x = 832,014,721.41/42,603.32
  6. Step 6: Final answer
    x = 19,529.34

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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.