Home / 19,320.30-28,999.65-9,470.70

Finding the Fourth Proportional to 19,320.30, 28,999.65 and 9,470.70

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Solution

The fourth proportional to 19,320.30, 28,999.65 and 9,470.70 is: 14,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.30 : 28,999.65 = 9,470.70 : x
  2. Step 2: Convert to fraction form
    19,320.30/28,999.65 = 9,470.70/x
  3. Step 3: Cross multiply
    19,320.30x = 28,999.65 × 9,470.70
  4. Step 4: Simplify right side
    19,320.30x = 274,646,985.26
  5. Step 5: Solve for x
    x = 274,646,985.26/19,320.30
  6. Step 6: Final answer
    x = 14,215.46

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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.