Home / 21,312.48-29,409.15-12,360.57

Finding the Fourth Proportional to 21,312.48, 29,409.15 and 12,360.57

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Solution

The fourth proportional to 21,312.48, 29,409.15 and 12,360.57 is: 17,056.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.48 : 29,409.15 = 12,360.57 : x
  2. Step 2: Convert to fraction form
    21,312.48/29,409.15 = 12,360.57/x
  3. Step 3: Cross multiply
    21,312.48x = 29,409.15 × 12,360.57
  4. Step 4: Simplify right side
    21,312.48x = 363,513,857.22
  5. Step 5: Solve for x
    x = 363,513,857.22/21,312.48
  6. Step 6: Final answer
    x = 17,056.38

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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.