Home / 30,898.02-42,622.83-18,802.20

Finding the Fourth Proportional to 30,898.02, 42,622.83 and 18,802.20

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Solution

The fourth proportional to 30,898.02, 42,622.83 and 18,802.20 is: 25,937.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.02 : 42,622.83 = 18,802.20 : x
  2. Step 2: Convert to fraction form
    30,898.02/42,622.83 = 18,802.20/x
  3. Step 3: Cross multiply
    30,898.02x = 42,622.83 × 18,802.20
  4. Step 4: Simplify right side
    30,898.02x = 801,402,974.23
  5. Step 5: Solve for x
    x = 801,402,974.23/30,898.02
  6. Step 6: Final answer
    x = 25,937.03

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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.