Home / 31,038.39-42,833.81-19,108.51

Finding the Fourth Proportional to 31,038.39, 42,833.81 and 19,108.51

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Solution

The fourth proportional to 31,038.39, 42,833.81 and 19,108.51 is: 26,370.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,038.39 : 42,833.81 = 19,108.51 : x
  2. Step 2: Convert to fraction form
    31,038.39/42,833.81 = 19,108.51/x
  3. Step 3: Cross multiply
    31,038.39x = 42,833.81 × 19,108.51
  4. Step 4: Simplify right side
    31,038.39x = 818,490,227.41
  5. Step 5: Solve for x
    x = 818,490,227.41/31,038.39
  6. Step 6: Final answer
    x = 26,370.25

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Double scale
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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.