Finding the Fourth Proportional to 20,058,138.68, 27,679,947.36 and 11,356,085.12
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Solution
The fourth proportional to 20,058,138.68, 27,679,947.36 and 11,356,085.12 is: 15,671,236.67
Step by Step Solution
- Step 1: Write the proportion equation
20,058,138.68 : 27,679,947.36 = 11,356,085.12 : x - Step 2: Convert to fraction form
20,058,138.68/27,679,947.36 = 11,356,085.12/x - Step 3: Cross multiply
20,058,138.68x = 27,679,947.36 × 11,356,085.12 - Step 4: Simplify right side
20,058,138.68x = 314,335,838,337,279.25 - Step 5: Solve for x
x = 314,335,838,337,279.25/20,058,138.68 - Step 6: Final answer
x = 15,671,236.67
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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.