Home / 15,810.05-23,712.34-5,421.80

Finding the Fourth Proportional to 15,810.05, 23,712.34 and 5,421.80

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Solution

The fourth proportional to 15,810.05, 23,712.34 and 5,421.80 is: 8,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,810.05 : 23,712.34 = 5,421.80 : x
  2. Step 2: Convert to fraction form
    15,810.05/23,712.34 = 5,421.80/x
  3. Step 3: Cross multiply
    15,810.05x = 23,712.34 × 5,421.80
  4. Step 4: Simplify right side
    15,810.05x = 128,563,419.34
  5. Step 5: Solve for x
    x = 128,563,419.34/15,810.05
  6. Step 6: Final answer
    x = 8,131.76

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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.