Home / 15,637.80-21,580.20-8,564.22

Finding the Fourth Proportional to 15,637.80, 21,580.20 and 8,564.22

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Solution

The fourth proportional to 15,637.80, 21,580.20 and 8,564.22 is: 11,818.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,637.80 : 21,580.20 = 8,564.22 : x
  2. Step 2: Convert to fraction form
    15,637.80/21,580.20 = 8,564.22/x
  3. Step 3: Cross multiply
    15,637.80x = 21,580.20 × 8,564.22
  4. Step 4: Simplify right side
    15,637.80x = 184,817,580.44
  5. Step 5: Solve for x
    x = 184,817,580.44/15,637.80
  6. Step 6: Final answer
    x = 11,818.64

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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.