Home / 10,859.40-14,988.18-10,120.68

Finding the Fourth Proportional to 10,859.40, 14,988.18 and 10,120.68

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Solution

The fourth proportional to 10,859.40, 14,988.18 and 10,120.68 is: 13,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,859.40 : 14,988.18 = 10,120.68 : x
  2. Step 2: Convert to fraction form
    10,859.40/14,988.18 = 10,120.68/x
  3. Step 3: Cross multiply
    10,859.40x = 14,988.18 × 10,120.68
  4. Step 4: Simplify right side
    10,859.40x = 151,690,573.56
  5. Step 5: Solve for x
    x = 151,690,573.56/10,859.40
  6. Step 6: Final answer
    x = 13,968.60

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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.