Home / 30,615.48-42,250.08-17,187.72

Finding the Fourth Proportional to 30,615.48, 42,250.08 and 17,187.72

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Solution

The fourth proportional to 30,615.48, 42,250.08 and 17,187.72 is: 23,719.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.48 : 42,250.08 = 17,187.72 : x
  2. Step 2: Convert to fraction form
    30,615.48/42,250.08 = 17,187.72/x
  3. Step 3: Cross multiply
    30,615.48x = 42,250.08 × 17,187.72
  4. Step 4: Simplify right side
    30,615.48x = 726,182,545.02
  5. Step 5: Solve for x
    x = 726,182,545.02/30,615.48
  6. Step 6: Final answer
    x = 23,719.46

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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.