Home / 15,315,973.20-21,137,088.66-9,357,931.08

Finding the Fourth Proportional to 15,315,973.20, 21,137,088.66 and 9,357,931.08

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Solution

The fourth proportional to 15,315,973.20, 21,137,088.66 and 9,357,931.08 is: 12,914,583.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,315,973.20 : 21,137,088.66 = 9,357,931.08 : x
  2. Step 2: Convert to fraction form
    15,315,973.20/21,137,088.66 = 9,357,931.08/x
  3. Step 3: Cross multiply
    15,315,973.20x = 21,137,088.66 × 9,357,931.08
  4. Step 4: Simplify right side
    15,315,973.20x = 197,799,418,912,129.56
  5. Step 5: Solve for x
    x = 197,799,418,912,129.56/15,315,973.20
  6. Step 6: Final answer
    x = 12,914,583.77

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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.