Home / 15,697,428-21,657,582.18-9,166,346.16

Finding the Fourth Proportional to 15,697,428, 21,657,582.18 and 9,166,346.16

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Solution

The fourth proportional to 15,697,428, 21,657,582.18 and 9,166,346.16 is: 12,646,714.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,697,428 : 21,657,582.18 = 9,166,346.16 : x
  2. Step 2: Convert to fraction form
    15,697,428/21,657,582.18 = 9,166,346.16/x
  3. Step 3: Cross multiply
    15,697,428x = 21,657,582.18 × 9,166,346.16
  4. Step 4: Simplify right side
    15,697,428x = 198,520,895,250,527.44
  5. Step 5: Solve for x
    x = 198,520,895,250,527.44/15,697,428
  6. Step 6: Final answer
    x = 12,646,714.82

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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.