Home / 20,457.60-28,216.80-14,398.08

Finding the Fourth Proportional to 20,457.60, 28,216.80 and 14,398.08

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Solution

The fourth proportional to 20,457.60, 28,216.80 and 14,398.08 is: 19,859.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.60 : 28,216.80 = 14,398.08 : x
  2. Step 2: Convert to fraction form
    20,457.60/28,216.80 = 14,398.08/x
  3. Step 3: Cross multiply
    20,457.60x = 28,216.80 × 14,398.08
  4. Step 4: Simplify right side
    20,457.60x = 406,267,743.74
  5. Step 5: Solve for x
    x = 406,267,743.74/20,457.60
  6. Step 6: Final answer
    x = 19,859.01

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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.