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Finding the Fourth Proportional to 10,369,972.70, 15,554,959.05 and 8,205,134.30

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Solution

The fourth proportional to 10,369,972.70, 15,554,959.05 and 8,205,134.30 is: 12,307,701.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369,972.70 : 15,554,959.05 = 8,205,134.30 : x
  2. Step 2: Convert to fraction form
    10,369,972.70/15,554,959.05 = 8,205,134.30/x
  3. Step 3: Cross multiply
    10,369,972.70x = 15,554,959.05 × 8,205,134.30
  4. Step 4: Simplify right side
    10,369,972.70x = 127,630,528,036,250.42
  5. Step 5: Solve for x
    x = 127,630,528,036,250.42/10,369,972.70
  6. Step 6: Final answer
    x = 12,307,701.45

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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.