Home / 15,781.40-23,665.93-5,915.30

Finding the Fourth Proportional to 15,781.40, 23,665.93 and 5,915.30

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Solution

The fourth proportional to 15,781.40, 23,665.93 and 5,915.30 is: 8,870.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,781.40 : 23,665.93 = 5,915.30 : x
  2. Step 2: Convert to fraction form
    15,781.40/23,665.93 = 5,915.30/x
  3. Step 3: Cross multiply
    15,781.40x = 23,665.93 × 5,915.30
  4. Step 4: Simplify right side
    15,781.40x = 139,991,031.36
  5. Step 5: Solve for x
    x = 139,991,031.36/15,781.40
  6. Step 6: Final answer
    x = 8,870.63

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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.