Home / 15,729.02-21,703.58-9,355.84

Finding the Fourth Proportional to 15,729.02, 21,703.58 and 9,355.84

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Solution

The fourth proportional to 15,729.02, 21,703.58 and 9,355.84 is: 12,909.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,729.02 : 21,703.58 = 9,355.84 : x
  2. Step 2: Convert to fraction form
    15,729.02/21,703.58 = 9,355.84/x
  3. Step 3: Cross multiply
    15,729.02x = 21,703.58 × 9,355.84
  4. Step 4: Simplify right side
    15,729.02x = 203,055,155.95
  5. Step 5: Solve for x
    x = 203,055,155.95/15,729.02
  6. Step 6: Final answer
    x = 12,909.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.