Home / 21,065,368.77-29,061,997.40-13,220,303.00

Finding the Fourth Proportional to 21,065,368.77, 29,061,997.40 and 13,220,303.00

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Solution

The fourth proportional to 21,065,368.77, 29,061,997.40 and 13,220,303.00 is: 18,238,864.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,065,368.77 : 29,061,997.40 = 13,220,303.00 : x
  2. Step 2: Convert to fraction form
    21,065,368.77/29,061,997.40 = 13,220,303.00/x
  3. Step 3: Cross multiply
    21,065,368.77x = 29,061,997.40 × 13,220,303.00
  4. Step 4: Simplify right side
    21,065,368.77x = 384,208,411,201,800.69
  5. Step 5: Solve for x
    x = 384,208,411,201,800.69/21,065,368.77
  6. Step 6: Final answer
    x = 18,238,864.72

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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.