Home / 31,219.29-43,090.64-19,275.77

Finding the Fourth Proportional to 31,219.29, 43,090.64 and 19,275.77

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Solution

The fourth proportional to 31,219.29, 43,090.64 and 19,275.77 is: 26,605.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,219.29 : 43,090.64 = 19,275.77 : x
  2. Step 2: Convert to fraction form
    31,219.29/43,090.64 = 19,275.77/x
  3. Step 3: Cross multiply
    31,219.29x = 43,090.64 × 19,275.77
  4. Step 4: Simplify right side
    31,219.29x = 830,604,953.96
  5. Step 5: Solve for x
    x = 830,604,953.96/31,219.29
  6. Step 6: Final answer
    x = 26,605.50

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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.