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Finding the Fourth Proportional to 15,703.65, 21,670.94 and 8,533.53

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Solution

The fourth proportional to 15,703.65, 21,670.94 and 8,533.53 is: 11,776.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,703.65 : 21,670.94 = 8,533.53 : x
  2. Step 2: Convert to fraction form
    15,703.65/21,670.94 = 8,533.53/x
  3. Step 3: Cross multiply
    15,703.65x = 21,670.94 × 8,533.53
  4. Step 4: Simplify right side
    15,703.65x = 184,929,573.95
  5. Step 5: Solve for x
    x = 184,929,573.95/15,703.65
  6. Step 6: Final answer
    x = 11,776.22

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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.