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Finding the Fourth Proportional to 15,701.70, 23,540.55 and 7,916.10

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Solution

The fourth proportional to 15,701.70, 23,540.55 and 7,916.10 is: 11,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,701.70 : 23,540.55 = 7,916.10 : x
  2. Step 2: Convert to fraction form
    15,701.70/23,540.55 = 7,916.10/x
  3. Step 3: Cross multiply
    15,701.70x = 23,540.55 × 7,916.10
  4. Step 4: Simplify right side
    15,701.70x = 186,349,347.86
  5. Step 5: Solve for x
    x = 186,349,347.86/15,701.70
  6. Step 6: Final answer
    x = 11,868.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.