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Finding the Fourth Proportional to 21,692,904.30, 32,516,479.08 and 7,116,017.40

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Solution

The fourth proportional to 21,692,904.30, 32,516,479.08 and 7,116,017.40 is: 10,666,521.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,692,904.30 : 32,516,479.08 = 7,116,017.40 : x
  2. Step 2: Convert to fraction form
    21,692,904.30/32,516,479.08 = 7,116,017.40/x
  3. Step 3: Cross multiply
    21,692,904.30x = 32,516,479.08 × 7,116,017.40
  4. Step 4: Simplify right side
    21,692,904.30x = 231,387,830,920,016
  5. Step 5: Solve for x
    x = 231,387,830,920,016/21,692,904.30
  6. Step 6: Final answer
    x = 10,666,521.54

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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.