Home / 28,036.65-38,690.45-15,461.40

Finding the Fourth Proportional to 28,036.65, 38,690.45 and 15,461.40

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Solution

The fourth proportional to 28,036.65, 38,690.45 and 15,461.40 is: 21,336.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036.65 : 38,690.45 = 15,461.40 : x
  2. Step 2: Convert to fraction form
    28,036.65/38,690.45 = 15,461.40/x
  3. Step 3: Cross multiply
    28,036.65x = 38,690.45 × 15,461.40
  4. Step 4: Simplify right side
    28,036.65x = 598,208,523.63
  5. Step 5: Solve for x
    x = 598,208,523.63/28,036.65
  6. Step 6: Final answer
    x = 21,336.66

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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.