Home / 15,642,605,740.81-21,587,205,045.87-8,506,436,918.32

Finding the Fourth Proportional to 15,642,605,740.81, 21,587,205,045.87 and 8,506,436,918.32

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Solution

The fourth proportional to 15,642,605,740.81, 21,587,205,045.87 and 8,506,436,918.32 is: 11,739,105,428.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,642,605,740.81 : 21,587,205,045.87 = 8,506,436,918.32 : x
  2. Step 2: Convert to fraction form
    15,642,605,740.81/21,587,205,045.87 = 8,506,436,918.32/x
  3. Step 3: Cross multiply
    15,642,605,740.81x = 21,587,205,045.87 × 8,506,436,918.32
  4. Step 4: Simplify right side
    15,642,605,740.81x = 183,630,197,965,424,394,240
  5. Step 5: Solve for x
    x = 183,630,197,965,424,394,240/15,642,605,740.81
  6. Step 6: Final answer
    x = 11,739,105,428.35

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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.