Home / 11,117.70-15,316.02-7,754.40

Finding the Fourth Proportional to 11,117.70, 15,316.02 and 7,754.40

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Solution

The fourth proportional to 11,117.70, 15,316.02 and 7,754.40 is: 10,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,117.70 : 15,316.02 = 7,754.40 : x
  2. Step 2: Convert to fraction form
    11,117.70/15,316.02 = 7,754.40/x
  3. Step 3: Cross multiply
    11,117.70x = 15,316.02 × 7,754.40
  4. Step 4: Simplify right side
    11,117.70x = 118,766,545.49
  5. Step 5: Solve for x
    x = 118,766,545.49/11,117.70
  6. Step 6: Final answer
    x = 10,682.65

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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.