Home / 21,065.51-29,070.15-12,113.04

Finding the Fourth Proportional to 21,065.51, 29,070.15 and 12,113.04

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Solution

The fourth proportional to 21,065.51, 29,070.15 and 12,113.04 is: 16,715.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065.51 : 29,070.15 = 12,113.04 : x
  2. Step 2: Convert to fraction form
    21,065.51/29,070.15 = 12,113.04/x
  3. Step 3: Cross multiply
    21,065.51x = 29,070.15 × 12,113.04
  4. Step 4: Simplify right side
    21,065.51x = 352,127,889.76
  5. Step 5: Solve for x
    x = 352,127,889.76/21,065.51
  6. Step 6: Final answer
    x = 16,715.85

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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.