Home / 14,281.40-21,422.10-13,698.20

Finding the Fourth Proportional to 14,281.40, 21,422.10 and 13,698.20

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Solution

The fourth proportional to 14,281.40, 21,422.10 and 13,698.20 is: 20,547.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,281.40 : 21,422.10 = 13,698.20 : x
  2. Step 2: Convert to fraction form
    14,281.40/21,422.10 = 13,698.20/x
  3. Step 3: Cross multiply
    14,281.40x = 21,422.10 × 13,698.20
  4. Step 4: Simplify right side
    14,281.40x = 293,444,210.22
  5. Step 5: Solve for x
    x = 293,444,210.22/14,281.40
  6. Step 6: Final answer
    x = 20,547.30

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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.