Home / 20,349.60-28,085.84-13,970.98

Finding the Fourth Proportional to 20,349.60, 28,085.84 and 13,970.98

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Solution

The fourth proportional to 20,349.60, 28,085.84 and 13,970.98 is: 19,282.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,349.60 : 28,085.84 = 13,970.98 : x
  2. Step 2: Convert to fraction form
    20,349.60/28,085.84 = 13,970.98/x
  3. Step 3: Cross multiply
    20,349.60x = 28,085.84 × 13,970.98
  4. Step 4: Simplify right side
    20,349.60x = 392,386,726.57
  5. Step 5: Solve for x
    x = 392,386,726.57/20,349.60
  6. Step 6: Final answer
    x = 19,282.28

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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.