Home / 21,307.64-29,404.67-12,360.47

Finding the Fourth Proportional to 21,307.64, 29,404.67 and 12,360.47

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Solution

The fourth proportional to 21,307.64, 29,404.67 and 12,360.47 is: 17,057.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,307.64 : 29,404.67 = 12,360.47 : x
  2. Step 2: Convert to fraction form
    21,307.64/29,404.67 = 12,360.47/x
  3. Step 3: Cross multiply
    21,307.64x = 29,404.67 × 12,360.47
  4. Step 4: Simplify right side
    21,307.64x = 363,455,332.57
  5. Step 5: Solve for x
    x = 363,455,332.57/21,307.64
  6. Step 6: Final answer
    x = 17,057.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.