Home / 28,030.16-38,681.63-15,454.91

Finding the Fourth Proportional to 28,030.16, 38,681.63 and 15,454.91

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Solution

The fourth proportional to 28,030.16, 38,681.63 and 15,454.91 is: 21,327.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,030.16 : 38,681.63 = 15,454.91 : x
  2. Step 2: Convert to fraction form
    28,030.16/38,681.63 = 15,454.91/x
  3. Step 3: Cross multiply
    28,030.16x = 38,681.63 × 15,454.91
  4. Step 4: Simplify right side
    28,030.16x = 597,821,110.30
  5. Step 5: Solve for x
    x = 597,821,110.30/28,030.16
  6. Step 6: Final answer
    x = 21,327.78

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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.