Home / 28,526.04-39,366-15,780.15

Finding the Fourth Proportional to 28,526.04, 39,366 and 15,780.15

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Solution

The fourth proportional to 28,526.04, 39,366 and 15,780.15 is: 21,776.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.04 : 39,366 = 15,780.15 : x
  2. Step 2: Convert to fraction form
    28,526.04/39,366 = 15,780.15/x
  3. Step 3: Cross multiply
    28,526.04x = 39,366 × 15,780.15
  4. Step 4: Simplify right side
    28,526.04x = 621,201,384.90
  5. Step 5: Solve for x
    x = 621,201,384.90/28,526.04
  6. Step 6: Final answer
    x = 21,776.64

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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.