Home / 28,036,348.57-38,707,674.96-21,497,415.40

Finding the Fourth Proportional to 28,036,348.57, 38,707,674.96 and 21,497,415.40

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Solution

The fourth proportional to 28,036,348.57, 38,707,674.96 and 21,497,415.40 is: 29,679,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,036,348.57 : 38,707,674.96 = 21,497,415.40 : x
  2. Step 2: Convert to fraction form
    28,036,348.57/38,707,674.96 = 21,497,415.40/x
  3. Step 3: Cross multiply
    28,036,348.57x = 38,707,674.96 × 21,497,415.40
  4. Step 4: Simplify right side
    28,036,348.57x = 832,114,967,783,298.38
  5. Step 5: Solve for x
    x = 832,114,967,783,298.38/28,036,348.57
  6. Step 6: Final answer
    x = 29,679,862.40

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Double scale
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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.