Home / 10,138.34-13,988.40-6,159.21

Finding the Fourth Proportional to 10,138.34, 13,988.40 and 6,159.21

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Solution

The fourth proportional to 10,138.34, 13,988.40 and 6,159.21 is: 8,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,138.34 : 13,988.40 = 6,159.21 : x
  2. Step 2: Convert to fraction form
    10,138.34/13,988.40 = 6,159.21/x
  3. Step 3: Cross multiply
    10,138.34x = 13,988.40 × 6,159.21
  4. Step 4: Simplify right side
    10,138.34x = 86,157,493.16
  5. Step 5: Solve for x
    x = 86,157,493.16/10,138.34
  6. Step 6: Final answer
    x = 8,498.19

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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.