Home / 13,402,187.60-20,081,119.80-7,712,488.40

Finding the Fourth Proportional to 13,402,187.60, 20,081,119.80 and 7,712,488.40

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Solution

The fourth proportional to 13,402,187.60, 20,081,119.80 and 7,712,488.40 is: 11,555,979.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,402,187.60 : 20,081,119.80 = 7,712,488.40 : x
  2. Step 2: Convert to fraction form
    13,402,187.60/20,081,119.80 = 7,712,488.40/x
  3. Step 3: Cross multiply
    13,402,187.60x = 20,081,119.80 × 7,712,488.40
  4. Step 4: Simplify right side
    13,402,187.60x = 154,875,403,516,510.34
  5. Step 5: Solve for x
    x = 154,875,403,516,510.34/13,402,187.60
  6. Step 6: Final answer
    x = 11,555,979.38

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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.