Home / 30,965.13-42,710.13-19,035.05

Finding the Fourth Proportional to 30,965.13, 42,710.13 and 19,035.05

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Solution

The fourth proportional to 30,965.13, 42,710.13 and 19,035.05 is: 26,254.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,965.13 : 42,710.13 = 19,035.05 : x
  2. Step 2: Convert to fraction form
    30,965.13/42,710.13 = 19,035.05/x
  3. Step 3: Cross multiply
    30,965.13x = 42,710.13 × 19,035.05
  4. Step 4: Simplify right side
    30,965.13x = 812,989,246.51
  5. Step 5: Solve for x
    x = 812,989,246.51/30,965.13
  6. Step 6: Final answer
    x = 26,254.99

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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.