Home / 30,013.34-45,011.70-12,479.27

Finding the Fourth Proportional to 30,013.34, 45,011.70 and 12,479.27

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Solution

The fourth proportional to 30,013.34, 45,011.70 and 12,479.27 is: 18,715.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,013.34 : 45,011.70 = 12,479.27 : x
  2. Step 2: Convert to fraction form
    30,013.34/45,011.70 = 12,479.27/x
  3. Step 3: Cross multiply
    30,013.34x = 45,011.70 × 12,479.27
  4. Step 4: Simplify right side
    30,013.34x = 561,712,932.40
  5. Step 5: Solve for x
    x = 561,712,932.40/30,013.34
  6. Step 6: Final answer
    x = 18,715.45

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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.