Home / 28,370.68-39,154.02-15,797.80

Finding the Fourth Proportional to 28,370.68, 39,154.02 and 15,797.80

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Solution

The fourth proportional to 28,370.68, 39,154.02 and 15,797.80 is: 21,802.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,370.68 : 39,154.02 = 15,797.80 : x
  2. Step 2: Convert to fraction form
    28,370.68/39,154.02 = 15,797.80/x
  3. Step 3: Cross multiply
    28,370.68x = 39,154.02 × 15,797.80
  4. Step 4: Simplify right side
    28,370.68x = 618,547,377.16
  5. Step 5: Solve for x
    x = 618,547,377.16/28,370.68
  6. Step 6: Final answer
    x = 21,802.35

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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.