Home / 10,605.20-14,637.36-6,128.32

Finding the Fourth Proportional to 10,605.20, 14,637.36 and 6,128.32

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Solution

The fourth proportional to 10,605.20, 14,637.36 and 6,128.32 is: 8,458.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,605.20 : 14,637.36 = 6,128.32 : x
  2. Step 2: Convert to fraction form
    10,605.20/14,637.36 = 6,128.32/x
  3. Step 3: Cross multiply
    10,605.20x = 14,637.36 × 6,128.32
  4. Step 4: Simplify right side
    10,605.20x = 89,702,426.04
  5. Step 5: Solve for x
    x = 89,702,426.04/10,605.20
  6. Step 6: Final answer
    x = 8,458.34

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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.