Home / 21,153.46-29,191.76-12,655.93

Finding the Fourth Proportional to 21,153.46, 29,191.76 and 12,655.93

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Solution

The fourth proportional to 21,153.46, 29,191.76 and 12,655.93 is: 17,465.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,153.46 : 29,191.76 = 12,655.93 : x
  2. Step 2: Convert to fraction form
    21,153.46/29,191.76 = 12,655.93/x
  3. Step 3: Cross multiply
    21,153.46x = 29,191.76 × 12,655.93
  4. Step 4: Simplify right side
    21,153.46x = 369,448,837.07
  5. Step 5: Solve for x
    x = 369,448,837.07/21,153.46
  6. Step 6: Final answer
    x = 17,465.17

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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.