Home / 21,264,015.40-31,896,023.10-9,905,612.20

Finding the Fourth Proportional to 21,264,015.40, 31,896,023.10 and 9,905,612.20

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Solution

The fourth proportional to 21,264,015.40, 31,896,023.10 and 9,905,612.20 is: 14,858,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,264,015.40 : 31,896,023.10 = 9,905,612.20 : x
  2. Step 2: Convert to fraction form
    21,264,015.40/31,896,023.10 = 9,905,612.20/x
  3. Step 3: Cross multiply
    21,264,015.40x = 31,896,023.10 × 9,905,612.20
  4. Step 4: Simplify right side
    21,264,015.40x = 315,949,635,550,841.81
  5. Step 5: Solve for x
    x = 315,949,635,550,841.81/21,264,015.40
  6. Step 6: Final answer
    x = 14,858,418.30

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1.5x scale

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.