Home / 21,070.95-29,075.81-11,638.91

Finding the Fourth Proportional to 21,070.95, 29,075.81 and 11,638.91

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Solution

The fourth proportional to 21,070.95, 29,075.81 and 11,638.91 is: 16,060.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,070.95 : 29,075.81 = 11,638.91 : x
  2. Step 2: Convert to fraction form
    21,070.95/29,075.81 = 11,638.91/x
  3. Step 3: Cross multiply
    21,070.95x = 29,075.81 × 11,638.91
  4. Step 4: Simplify right side
    21,070.95x = 338,410,532.19
  5. Step 5: Solve for x
    x = 338,410,532.19/21,070.95
  6. Step 6: Final answer
    x = 16,060.53

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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.