Home / 23,420.79-32,320.68-12,810.42

Finding the Fourth Proportional to 23,420.79, 32,320.68 and 12,810.42

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Solution

The fourth proportional to 23,420.79, 32,320.68 and 12,810.42 is: 17,678.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,420.79 : 32,320.68 = 12,810.42 : x
  2. Step 2: Convert to fraction form
    23,420.79/32,320.68 = 12,810.42/x
  3. Step 3: Cross multiply
    23,420.79x = 32,320.68 × 12,810.42
  4. Step 4: Simplify right side
    23,420.79x = 414,041,485.49
  5. Step 5: Solve for x
    x = 414,041,485.49/23,420.79
  6. Step 6: Final answer
    x = 17,678.37

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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.