Home / 42,911.07-64,370.75-13,320.96

Finding the Fourth Proportional to 42,911.07, 64,370.75 and 13,320.96

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Solution

The fourth proportional to 42,911.07, 64,370.75 and 13,320.96 is: 19,982.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,911.07 : 64,370.75 = 13,320.96 : x
  2. Step 2: Convert to fraction form
    42,911.07/64,370.75 = 13,320.96/x
  3. Step 3: Cross multiply
    42,911.07x = 64,370.75 × 13,320.96
  4. Step 4: Simplify right side
    42,911.07x = 857,480,219.22
  5. Step 5: Solve for x
    x = 857,480,219.22/42,911.07
  6. Step 6: Final answer
    x = 19,982.73

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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.