Home / 31,547.87-47,315.12-11,827.88

Finding the Fourth Proportional to 31,547.87, 47,315.12 and 11,827.88

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Solution

The fourth proportional to 31,547.87, 47,315.12 and 11,827.88 is: 17,739.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.87 : 47,315.12 = 11,827.88 : x
  2. Step 2: Convert to fraction form
    31,547.87/47,315.12 = 11,827.88/x
  3. Step 3: Cross multiply
    31,547.87x = 47,315.12 × 11,827.88
  4. Step 4: Simplify right side
    31,547.87x = 559,637,561.55
  5. Step 5: Solve for x
    x = 559,637,561.55/31,547.87
  6. Step 6: Final answer
    x = 17,739.31

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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.