Home / 13,988.12-19,298.72-7,937.64

Finding the Fourth Proportional to 13,988.12, 19,298.72 and 7,937.64

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Solution

The fourth proportional to 13,988.12, 19,298.72 and 7,937.64 is: 10,951.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.12 : 19,298.72 = 7,937.64 : x
  2. Step 2: Convert to fraction form
    13,988.12/19,298.72 = 7,937.64/x
  3. Step 3: Cross multiply
    13,988.12x = 19,298.72 × 7,937.64
  4. Step 4: Simplify right side
    13,988.12x = 153,186,311.66
  5. Step 5: Solve for x
    x = 153,186,311.66/13,988.12
  6. Step 6: Final answer
    x = 10,951.18

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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.