Home / 28,030.62-38,681.28-15,455.28

Finding the Fourth Proportional to 28,030.62, 38,681.28 and 15,455.28

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Solution

The fourth proportional to 28,030.62, 38,681.28 and 15,455.28 is: 21,327.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.62 : 38,681.28 = 15,455.28 : x
  2. Step 2: Convert to fraction form
    28,030.62/38,681.28 = 15,455.28/x
  3. Step 3: Cross multiply
    28,030.62x = 38,681.28 × 15,455.28
  4. Step 4: Simplify right side
    28,030.62x = 597,830,013.16
  5. Step 5: Solve for x
    x = 597,830,013.16/28,030.62
  6. Step 6: Final answer
    x = 21,327.75

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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.