Home / 13,990.76-19,307.47-7,703.14

Finding the Fourth Proportional to 13,990.76, 19,307.47 and 7,703.14

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Solution

The fourth proportional to 13,990.76, 19,307.47 and 7,703.14 is: 10,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.76 : 19,307.47 = 7,703.14 : x
  2. Step 2: Convert to fraction form
    13,990.76/19,307.47 = 7,703.14/x
  3. Step 3: Cross multiply
    13,990.76x = 19,307.47 × 7,703.14
  4. Step 4: Simplify right side
    13,990.76x = 148,728,144.46
  5. Step 5: Solve for x
    x = 148,728,144.46/13,990.76
  6. Step 6: Final answer
    x = 10,630.45

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Half scale
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Double scale
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Similar ratio
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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.