Home / 21,061,375.20-31,592,062.80-18,457,970.40

Finding the Fourth Proportional to 21,061,375.20, 31,592,062.80 and 18,457,970.40

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Solution

The fourth proportional to 21,061,375.20, 31,592,062.80 and 18,457,970.40 is: 27,686,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,061,375.20 : 31,592,062.80 = 18,457,970.40 : x
  2. Step 2: Convert to fraction form
    21,061,375.20/31,592,062.80 = 18,457,970.40/x
  3. Step 3: Cross multiply
    21,061,375.20x = 31,592,062.80 × 18,457,970.40
  4. Step 4: Simplify right side
    21,061,375.20x = 583,125,360,037,341.12
  5. Step 5: Solve for x
    x = 583,125,360,037,341.12/21,061,375.20
  6. Step 6: Final answer
    x = 27,686,955.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.