Home / 15,136.23-20,889.65-8,762.72

Finding the Fourth Proportional to 15,136.23, 20,889.65 and 8,762.72

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Solution

The fourth proportional to 15,136.23, 20,889.65 and 8,762.72 is: 12,093.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,136.23 : 20,889.65 = 8,762.72 : x
  2. Step 2: Convert to fraction form
    15,136.23/20,889.65 = 8,762.72/x
  3. Step 3: Cross multiply
    15,136.23x = 20,889.65 × 8,762.72
  4. Step 4: Simplify right side
    15,136.23x = 183,050,071.31
  5. Step 5: Solve for x
    x = 183,050,071.31/15,136.23
  6. Step 6: Final answer
    x = 12,093.50

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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.