Home / 31,058.32-42,865.08-18,313.84

Finding the Fourth Proportional to 31,058.32, 42,865.08 and 18,313.84

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Solution

The fourth proportional to 31,058.32, 42,865.08 and 18,313.84 is: 25,275.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,058.32 : 42,865.08 = 18,313.84 : x
  2. Step 2: Convert to fraction form
    31,058.32/42,865.08 = 18,313.84/x
  3. Step 3: Cross multiply
    31,058.32x = 42,865.08 × 18,313.84
  4. Step 4: Simplify right side
    31,058.32x = 785,024,216.71
  5. Step 5: Solve for x
    x = 785,024,216.71/31,058.32
  6. Step 6: Final answer
    x = 25,275.81

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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.