Home / 28,101.84-38,780.46-15,526.50

Finding the Fourth Proportional to 28,101.84, 38,780.46 and 15,526.50

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Solution

The fourth proportional to 28,101.84, 38,780.46 and 15,526.50 is: 21,426.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,101.84 : 38,780.46 = 15,526.50 : x
  2. Step 2: Convert to fraction form
    28,101.84/38,780.46 = 15,526.50/x
  3. Step 3: Cross multiply
    28,101.84x = 38,780.46 × 15,526.50
  4. Step 4: Simplify right side
    28,101.84x = 602,124,812.19
  5. Step 5: Solve for x
    x = 602,124,812.19/28,101.84
  6. Step 6: Final answer
    x = 21,426.53

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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.