Home / 42,929.20-64,403.74-13,345.44

Finding the Fourth Proportional to 42,929.20, 64,403.74 and 13,345.44

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Solution

The fourth proportional to 42,929.20, 64,403.74 and 13,345.44 is: 20,021.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,929.20 : 64,403.74 = 13,345.44 : x
  2. Step 2: Convert to fraction form
    42,929.20/64,403.74 = 13,345.44/x
  3. Step 3: Cross multiply
    42,929.20x = 64,403.74 × 13,345.44
  4. Step 4: Simplify right side
    42,929.20x = 859,496,247.95
  5. Step 5: Solve for x
    x = 859,496,247.95/42,929.20
  6. Step 6: Final answer
    x = 20,021.25

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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.