Home / 28,212.54-38,934.63-15,637.50

Finding the Fourth Proportional to 28,212.54, 38,934.63 and 15,637.50

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Solution

The fourth proportional to 28,212.54, 38,934.63 and 15,637.50 is: 21,580.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.54 : 38,934.63 = 15,637.50 : x
  2. Step 2: Convert to fraction form
    28,212.54/38,934.63 = 15,637.50/x
  3. Step 3: Cross multiply
    28,212.54x = 38,934.63 × 15,637.50
  4. Step 4: Simplify right side
    28,212.54x = 608,840,276.63
  5. Step 5: Solve for x
    x = 608,840,276.63/28,212.54
  6. Step 6: Final answer
    x = 21,580.48

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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.