Home / 31,031.28-42,823.62-19,087.56

Finding the Fourth Proportional to 31,031.28, 42,823.62 and 19,087.56

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Solution

The fourth proportional to 31,031.28, 42,823.62 and 19,087.56 is: 26,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,031.28 : 42,823.62 = 19,087.56 : x
  2. Step 2: Convert to fraction form
    31,031.28/42,823.62 = 19,087.56/x
  3. Step 3: Cross multiply
    31,031.28x = 42,823.62 × 19,087.56
  4. Step 4: Simplify right side
    31,031.28x = 817,398,416.17
  5. Step 5: Solve for x
    x = 817,398,416.17/31,031.28
  6. Step 6: Final answer
    x = 26,341.11

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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.