Home / 30,812.60-42,521.36-16,665.45

Finding the Fourth Proportional to 30,812.60, 42,521.36 and 16,665.45

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Solution

The fourth proportional to 30,812.60, 42,521.36 and 16,665.45 is: 22,998.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,812.60 : 42,521.36 = 16,665.45 : x
  2. Step 2: Convert to fraction form
    30,812.60/42,521.36 = 16,665.45/x
  3. Step 3: Cross multiply
    30,812.60x = 42,521.36 × 16,665.45
  4. Step 4: Simplify right side
    30,812.60x = 708,637,356.23
  5. Step 5: Solve for x
    x = 708,637,356.23/30,812.60
  6. Step 6: Final answer
    x = 22,998.30

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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.