Home / 20,038.08-27,643.32-12,966.80

Finding the Fourth Proportional to 20,038.08, 27,643.32 and 12,966.80

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Solution

The fourth proportional to 20,038.08, 27,643.32 and 12,966.80 is: 17,888.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,038.08 : 27,643.32 = 12,966.80 : x
  2. Step 2: Convert to fraction form
    20,038.08/27,643.32 = 12,966.80/x
  3. Step 3: Cross multiply
    20,038.08x = 27,643.32 × 12,966.80
  4. Step 4: Simplify right side
    20,038.08x = 358,445,401.78
  5. Step 5: Solve for x
    x = 358,445,401.78/20,038.08
  6. Step 6: Final answer
    x = 17,888.21

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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.