Home / 19,389.77-29,075.57-8,142.71

Finding the Fourth Proportional to 19,389.77, 29,075.57 and 8,142.71

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Solution

The fourth proportional to 19,389.77, 29,075.57 and 8,142.71 is: 12,210.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.77 : 29,075.57 = 8,142.71 : x
  2. Step 2: Convert to fraction form
    19,389.77/29,075.57 = 8,142.71/x
  3. Step 3: Cross multiply
    19,389.77x = 29,075.57 × 8,142.71
  4. Step 4: Simplify right side
    19,389.77x = 236,753,748.50
  5. Step 5: Solve for x
    x = 236,753,748.50/19,389.77
  6. Step 6: Final answer
    x = 12,210.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.