Home / 15,385.07-21,230.80-8,672.06

Finding the Fourth Proportional to 15,385.07, 21,230.80 and 8,672.06

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Solution

The fourth proportional to 15,385.07, 21,230.80 and 8,672.06 is: 11,967.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.07 : 21,230.80 = 8,672.06 : x
  2. Step 2: Convert to fraction form
    15,385.07/21,230.80 = 8,672.06/x
  3. Step 3: Cross multiply
    15,385.07x = 21,230.80 × 8,672.06
  4. Step 4: Simplify right side
    15,385.07x = 184,114,802.84
  5. Step 5: Solve for x
    x = 184,114,802.84/15,385.07
  6. Step 6: Final answer
    x = 11,967.11

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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.