Home / 28,275.84-39,020.58-15,700.50

Finding the Fourth Proportional to 28,275.84, 39,020.58 and 15,700.50

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Solution

The fourth proportional to 28,275.84, 39,020.58 and 15,700.50 is: 21,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275.84 : 39,020.58 = 15,700.50 : x
  2. Step 2: Convert to fraction form
    28,275.84/39,020.58 = 15,700.50/x
  3. Step 3: Cross multiply
    28,275.84x = 39,020.58 × 15,700.50
  4. Step 4: Simplify right side
    28,275.84x = 612,642,616.29
  5. Step 5: Solve for x
    x = 612,642,616.29/28,275.84
  6. Step 6: Final answer
    x = 21,666.65

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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.