Home / 30,898.77-42,623.87-18,802.95

Finding the Fourth Proportional to 30,898.77, 42,623.87 and 18,802.95

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Solution

The fourth proportional to 30,898.77, 42,623.87 and 18,802.95 is: 25,938.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.77 : 42,623.87 = 18,802.95 : x
  2. Step 2: Convert to fraction form
    30,898.77/42,623.87 = 18,802.95/x
  3. Step 3: Cross multiply
    30,898.77x = 42,623.87 × 18,802.95
  4. Step 4: Simplify right side
    30,898.77x = 801,454,402.40
  5. Step 5: Solve for x
    x = 801,454,402.40/30,898.77
  6. Step 6: Final answer
    x = 25,938.07

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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.