Home / 30,388.12-45,576.40-12,870.24

Finding the Fourth Proportional to 30,388.12, 45,576.40 and 12,870.24

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Solution

The fourth proportional to 30,388.12, 45,576.40 and 12,870.24 is: 19,302.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,388.12 : 45,576.40 = 12,870.24 : x
  2. Step 2: Convert to fraction form
    30,388.12/45,576.40 = 12,870.24/x
  3. Step 3: Cross multiply
    30,388.12x = 45,576.40 × 12,870.24
  4. Step 4: Simplify right side
    30,388.12x = 586,579,206.34
  5. Step 5: Solve for x
    x = 586,579,206.34/30,388.12
  6. Step 6: Final answer
    x = 19,302.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.