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Finding the Fourth Proportional to 15,035.21, 20,752.76 and 8,748.80

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Solution

The fourth proportional to 15,035.21, 20,752.76 and 8,748.80 is: 12,075.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,035.21 : 20,752.76 = 8,748.80 : x
  2. Step 2: Convert to fraction form
    15,035.21/20,752.76 = 8,748.80/x
  3. Step 3: Cross multiply
    15,035.21x = 20,752.76 × 8,748.80
  4. Step 4: Simplify right side
    15,035.21x = 181,561,746.69
  5. Step 5: Solve for x
    x = 181,561,746.69/15,035.21
  6. Step 6: Final answer
    x = 12,075.77

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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.