Home / 10,204.16-14,080.01-6,420.74

Finding the Fourth Proportional to 10,204.16, 14,080.01 and 6,420.74

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Solution

The fourth proportional to 10,204.16, 14,080.01 and 6,420.74 is: 8,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,204.16 : 14,080.01 = 6,420.74 : x
  2. Step 2: Convert to fraction form
    10,204.16/14,080.01 = 6,420.74/x
  3. Step 3: Cross multiply
    10,204.16x = 14,080.01 × 6,420.74
  4. Step 4: Simplify right side
    10,204.16x = 90,403,980.90
  5. Step 5: Solve for x
    x = 90,403,980.90/10,204.16
  6. Step 6: Final answer
    x = 8,859.53

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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.