Home / 28,103.02-38,782.95-15,528.58

Finding the Fourth Proportional to 28,103.02, 38,782.95 and 15,528.58

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Solution

The fourth proportional to 28,103.02, 38,782.95 and 15,528.58 is: 21,429.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.02 : 38,782.95 = 15,528.58 : x
  2. Step 2: Convert to fraction form
    28,103.02/38,782.95 = 15,528.58/x
  3. Step 3: Cross multiply
    28,103.02x = 38,782.95 × 15,528.58
  4. Step 4: Simplify right side
    28,103.02x = 602,244,141.71
  5. Step 5: Solve for x
    x = 602,244,141.71/28,103.02
  6. Step 6: Final answer
    x = 21,429.87

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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.