Home / 10,621.51-14,657.61-5,905.75

Finding the Fourth Proportional to 10,621.51, 14,657.61 and 5,905.75

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Solution

The fourth proportional to 10,621.51, 14,657.61 and 5,905.75 is: 8,149.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.51 : 14,657.61 = 5,905.75 : x
  2. Step 2: Convert to fraction form
    10,621.51/14,657.61 = 5,905.75/x
  3. Step 3: Cross multiply
    10,621.51x = 14,657.61 × 5,905.75
  4. Step 4: Simplify right side
    10,621.51x = 86,564,180.26
  5. Step 5: Solve for x
    x = 86,564,180.26/10,621.51
  6. Step 6: Final answer
    x = 8,149.89

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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.