Home / 31,547.90-47,308.00-11,812.62

Finding the Fourth Proportional to 31,547.90, 47,308.00 and 11,812.62

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Solution

The fourth proportional to 31,547.90, 47,308.00 and 11,812.62 is: 17,713.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.90 : 47,308.00 = 11,812.62 : x
  2. Step 2: Convert to fraction form
    31,547.90/47,308.00 = 11,812.62/x
  3. Step 3: Cross multiply
    31,547.90x = 47,308.00 × 11,812.62
  4. Step 4: Simplify right side
    31,547.90x = 558,831,380.77
  5. Step 5: Solve for x
    x = 558,831,380.77/31,547.90
  6. Step 6: Final answer
    x = 17,713.74

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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.