Home / 30,457.78-42,044.69-18,524.95

Finding the Fourth Proportional to 30,457.78, 42,044.69 and 18,524.95

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Solution

The fourth proportional to 30,457.78, 42,044.69 and 18,524.95 is: 25,572.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,457.78 : 42,044.69 = 18,524.95 : x
  2. Step 2: Convert to fraction form
    30,457.78/42,044.69 = 18,524.95/x
  3. Step 3: Cross multiply
    30,457.78x = 42,044.69 × 18,524.95
  4. Step 4: Simplify right side
    30,457.78x = 778,875,780.02
  5. Step 5: Solve for x
    x = 778,875,780.02/30,457.78
  6. Step 6: Final answer
    x = 25,572.31

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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.