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Finding the Fourth Proportional to 10,001.79, 13,803.57 and 7,479.45

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Solution

The fourth proportional to 10,001.79, 13,803.57 and 7,479.45 is: 10,322.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,001.79 : 13,803.57 = 7,479.45 : x
  2. Step 2: Convert to fraction form
    10,001.79/13,803.57 = 7,479.45/x
  3. Step 3: Cross multiply
    10,001.79x = 13,803.57 × 7,479.45
  4. Step 4: Simplify right side
    10,001.79x = 103,243,111.64
  5. Step 5: Solve for x
    x = 103,243,111.64/10,001.79
  6. Step 6: Final answer
    x = 10,322.46

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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.