Home / 30,730.76-42,411.64-18,802.04

Finding the Fourth Proportional to 30,730.76, 42,411.64 and 18,802.04

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Solution

The fourth proportional to 30,730.76, 42,411.64 and 18,802.04 is: 25,948.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,730.76 : 42,411.64 = 18,802.04 : x
  2. Step 2: Convert to fraction form
    30,730.76/42,411.64 = 18,802.04/x
  3. Step 3: Cross multiply
    30,730.76x = 42,411.64 × 18,802.04
  4. Step 4: Simplify right side
    30,730.76x = 797,425,351.75
  5. Step 5: Solve for x
    x = 797,425,351.75/30,730.76
  6. Step 6: Final answer
    x = 25,948.77

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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.