Home / 13,868.91-20,807.01-4,985.13

Finding the Fourth Proportional to 13,868.91, 20,807.01 and 4,985.13

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Solution

The fourth proportional to 13,868.91, 20,807.01 and 4,985.13 is: 7,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.91 : 20,807.01 = 4,985.13 : x
  2. Step 2: Convert to fraction form
    13,868.91/20,807.01 = 4,985.13/x
  3. Step 3: Cross multiply
    13,868.91x = 20,807.01 × 4,985.13
  4. Step 4: Simplify right side
    13,868.91x = 103,725,649.76
  5. Step 5: Solve for x
    x = 103,725,649.76/13,868.91
  6. Step 6: Final answer
    x = 7,479.01

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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.