Home / 30,576.29-42,195.71-18,475.10

Finding the Fourth Proportional to 30,576.29, 42,195.71 and 18,475.10

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Solution

The fourth proportional to 30,576.29, 42,195.71 and 18,475.10 is: 25,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,576.29 : 42,195.71 = 18,475.10 : x
  2. Step 2: Convert to fraction form
    30,576.29/42,195.71 = 18,475.10/x
  3. Step 3: Cross multiply
    30,576.29x = 42,195.71 × 18,475.10
  4. Step 4: Simplify right side
    30,576.29x = 779,569,862.57
  5. Step 5: Solve for x
    x = 779,569,862.57/30,576.29
  6. Step 6: Final answer
    x = 25,495.89

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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.