Home / 30,281.32-45,423.80-12,752.51

Finding the Fourth Proportional to 30,281.32, 45,423.80 and 12,752.51

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Solution

The fourth proportional to 30,281.32, 45,423.80 and 12,752.51 is: 19,129.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.32 : 45,423.80 = 12,752.51 : x
  2. Step 2: Convert to fraction form
    30,281.32/45,423.80 = 12,752.51/x
  3. Step 3: Cross multiply
    30,281.32x = 45,423.80 × 12,752.51
  4. Step 4: Simplify right side
    30,281.32x = 579,267,399.98
  5. Step 5: Solve for x
    x = 579,267,399.98/30,281.32
  6. Step 6: Final answer
    x = 19,129.53

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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.