Home / 20,426.79-28,192.04-12,473.60

Finding the Fourth Proportional to 20,426.79, 28,192.04 and 12,473.60

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Solution

The fourth proportional to 20,426.79, 28,192.04 and 12,473.60 is: 17,215.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.79 : 28,192.04 = 12,473.60 : x
  2. Step 2: Convert to fraction form
    20,426.79/28,192.04 = 12,473.60/x
  3. Step 3: Cross multiply
    20,426.79x = 28,192.04 × 12,473.60
  4. Step 4: Simplify right side
    20,426.79x = 351,656,331.81
  5. Step 5: Solve for x
    x = 351,656,331.81/20,426.79
  6. Step 6: Final answer
    x = 17,215.45

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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.