Home / 42,749.12-64,130.57-13,166.95

Finding the Fourth Proportional to 42,749.12, 64,130.57 and 13,166.95

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Solution

The fourth proportional to 42,749.12, 64,130.57 and 13,166.95 is: 19,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,749.12 : 64,130.57 = 13,166.95 : x
  2. Step 2: Convert to fraction form
    42,749.12/64,130.57 = 13,166.95/x
  3. Step 3: Cross multiply
    42,749.12x = 64,130.57 × 13,166.95
  4. Step 4: Simplify right side
    42,749.12x = 844,403,720.93
  5. Step 5: Solve for x
    x = 844,403,720.93/42,749.12
  6. Step 6: Final answer
    x = 19,752.54

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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.