Home / 31,380.48-47,070.72-11,664

Finding the Fourth Proportional to 31,380.48, 47,070.72 and 11,664

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Solution

The fourth proportional to 31,380.48, 47,070.72 and 11,664 is: 17,496

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,380.48 : 47,070.72 = 11,664 : x
  2. Step 2: Convert to fraction form
    31,380.48/47,070.72 = 11,664/x
  3. Step 3: Cross multiply
    31,380.48x = 47,070.72 × 11,664
  4. Step 4: Simplify right side
    31,380.48x = 549,032,878.08
  5. Step 5: Solve for x
    x = 549,032,878.08/31,380.48
  6. Step 6: Final answer
    x = 17,496

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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.