Home / 20,730,128.10-31,095,192.16-18,338,643.60

Finding the Fourth Proportional to 20,730,128.10, 31,095,192.16 and 18,338,643.60

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Solution

The fourth proportional to 20,730,128.10, 31,095,192.16 and 18,338,643.60 is: 27,507,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730,128.10 : 31,095,192.16 = 18,338,643.60 : x
  2. Step 2: Convert to fraction form
    20,730,128.10/31,095,192.16 = 18,338,643.60/x
  3. Step 3: Cross multiply
    20,730,128.10x = 31,095,192.16 × 18,338,643.60
  4. Step 4: Simplify right side
    20,730,128.10x = 570,243,646,695,754.25
  5. Step 5: Solve for x
    x = 570,243,646,695,754.25/20,730,128.10
  6. Step 6: Final answer
    x = 27,507,965.41

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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.