Home / 31,325.84-47,012.12-12,606.05

Finding the Fourth Proportional to 31,325.84, 47,012.12 and 12,606.05

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Solution

The fourth proportional to 31,325.84, 47,012.12 and 12,606.05 is: 18,918.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,325.84 : 47,012.12 = 12,606.05 : x
  2. Step 2: Convert to fraction form
    31,325.84/47,012.12 = 12,606.05/x
  3. Step 3: Cross multiply
    31,325.84x = 47,012.12 × 12,606.05
  4. Step 4: Simplify right side
    31,325.84x = 592,636,931.78
  5. Step 5: Solve for x
    x = 592,636,931.78/31,325.84
  6. Step 6: Final answer
    x = 18,918.47

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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.