Home / 23,421.24-32,320.89-12,810.78

Finding the Fourth Proportional to 23,421.24, 32,320.89 and 12,810.78

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Solution

The fourth proportional to 23,421.24, 32,320.89 and 12,810.78 is: 17,678.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,421.24 : 32,320.89 = 12,810.78 : x
  2. Step 2: Convert to fraction form
    23,421.24/32,320.89 = 12,810.78/x
  3. Step 3: Cross multiply
    23,421.24x = 32,320.89 × 12,810.78
  4. Step 4: Simplify right side
    23,421.24x = 414,055,811.19
  5. Step 5: Solve for x
    x = 414,055,811.19/23,421.24
  6. Step 6: Final answer
    x = 17,678.65

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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.